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HomeMy WebLinkAboutItem 4.02 Establish Speed Limits CITY CLERK File # D[2J~[Z2J-~[?iJ AGENDA STATEMENT CITY COUNCIL MEEnNG DATE: August 21, 2007 SUBJECT: Establishment of Speed Limits for Central Parkway, Gleason Drive, North and South Dublin Ranch Drive, Signal Hill Drive, Bent Tree Drive and Fallon Road Report Prepared by Melissa Morton, Public Works Direc~ ATTACHMENTS: Draft Ordinance Report from Omni-Means Traffic Consultants, Including Survey Forms /' . .~) CVC Section 40802 "Speed Trap" RECOMMENDATION: ~o Waive reading and adopt the ordinance establishing speed limits on Central Parkway, Gleason Drive, North and South Dublin Ranch Drive, Signal Hill Drive, Bent Tree Drive, and Fallon Road 1) 2) ~ FINANCIAL STATEMENT: The cost of installing speed limit signage is budgeted in the Street Maintenance Operating Budget. DESCRIPTION: . This is the second reading ofa proposed ordinance to establish speed limits on various Dublin streets. A public hearing was held at the August 7,2007, meeting. California Vehicle Code Section 40802 provides that police may use radar for speed enforcement as long as certain criteria are met. For roadways with residential frontage that are (1) not more than 40 feet in width, (2) not more than one half mile of uninterrupted length, and (3) not more than one traffic lane in each direction, a prima facie 25 mph speed limit may be used without performing a survey. For all other roadways, an engineering and traffic survey is required in order to permit enforcement by means of radar. The operative criterion determined by an engineering and traffic survey is the "85th percentile" or "critical" speed. This figure is based on the belief that most drivers will drive at a speed that is safe and reasonable for conditions. In a sampling of speeds that are taken by radar, 85% of drivers are traveling at the 85th percentile speed or lower. The second part of the engineering and traffic survey includes an analysis of the roadway to determine whether there are any offsetting factors such as curves, intersecting driveways, accident history, schools, and so forth, which would cause the recommended speed limit to be less than the ------....-- -....... _____ ..._~....s" ______________...__-....,.___________________ COpy TO: Page 1 of3 ITEM NO. 1- .2. n.\"rR A N~PORT A TION\T JV'JlI Tr..tfir.\.<i:".,.,.n ~n1"VP."""'.......ro. of..t.......... llNWf limn.. 1l.?I..07 ?nd nil> <for. 85th percentile speed. Engineering surveys are typically performed during non-commute hours and are not performed where roadways are still under construction or where there are temporary conditions that would affect a driver's speed. Traffic Commissioners take these engineering and traffic surveys seriously and may not uphold citations when the driver is within the 85th percentile speed, unless there are other criteria to indicate that the posted speed limit should be lower. Speed limits that are set artificially low are said to be "speed traps" and are typically not enforceable. The attached speed survey report and survey forms list a number of streets with existing speed limits that needed to be re-surveyed because the previous survey had expired or because the roadway characteristics changed since the last survey. These include Betlen Drive, Brighton Drive, Clark Avenue, Creekside Drive, Dublin Boulevard, Grafton Street, Scarlett Drive, and Village Parkway. It was discovered that certain segments of Central Parkway and Gleason Drive did not have adopted speed limits, although they do have posted speed limit signs. In addition, the residential streets of North and South Dublin Ranch Drive and Signal Hill Drive are over 40 feet wide and require surveys in order for the 25 mph speed limit to be enforceable. Two streets that do not have posted speed limits and had not been previously surveyed are Bent Tree Drive and Fallon Road between Bent Tree Drive and Signal Hill Drive. Following is a discussion and summary of findings for the streets that do not have adopted speed limits and are therefore included in the draft ordinance. Central Parkway (Arnold Road to Tassajara Road): A portion of Central Parkway was surveyed in 2000, and the existing survey expired in 2006. The posted speed limit on Central Parkway is 35 mph, but a speed limit has not been previously adopted. The survey just performed yielded 85th percentile speeds ranging from 35.2 mph to 38.6 mph, and it is recommended that the posted 35 mph speed limit be retained. (Central Parkway east of Tassajara Road has not been surveyed because of ongoing construction activity.) Gleason Drive (Arnold Road to TasSlijara Road): The segment of Gleason Drive between Hacienda Drive and Tassajara Road does not have an adopted speed limit. The speed limit on other portions of Gleason Drive was adopted as 40 mph. The 85th percentile speed between Hacienda Drive and Tassajara Road was surveyed at 42 mph. The recommended speed limit is 40 mph, which is consistent with the remainder of the street. North and South Dublin Ranch Drive: Portions of this continuous loop roadway are over 40 feet wide, which precipitates the need for the survey. The 85th percentile speed ranges from 27.6 to 36 mph. Because of the residential frontage, Ted Fairfield Park, and various school crossings, the speed limit is recommended to remain at the posted 25 mph. Signal Hill Drive: Signal Hill serves as the entrance to several Dublin Ranch subdivisions, as well as the golf course clubhouse area. The 85th percentile speed on Signal Hill Drive ranges from 29.5 mph to 32.9 mph. Because of the residential frontage and on-street parking, as well as the clubhouse entrance, it is recommended that the speed limit remain at the posted 25 mph. Bent Tree Drive: Bent Tree Drive serves as the entrance to several Dublin Ranch subdivisions. The 85th percentile speed on Bent Tree Drive is 37.9 mph. There are no houses directly fronting onto Bent Tree Drive, parking is allowed only on the upper portion, and there is no currently posted speed limit. It is recommended that the speed limit be set at 30 mph in order to support the 85th percentile speed. Fallon Road (Bent Tree Drive to Signal Hill Drive): Construction is essentially complete on this portion of Fallon Road. The 85th percentile speeds range from 41 mph between Bent Tree and Gleason Drive to 49.6 mph between Antone Way and Signal Hill. There are several signalized crossings which could incur Page 2 of3 pedestrians. In addition, the more southerly portion of Fallon Road near Gleason Drive, where speeds are slower, incurs some commute traffic and other, slower-moving construction vehicles. In order to provide consistency, it is recommended that the speed limit be set at 40 mph for the entire length of Fallon Road between Bent Tree Drive and Signal Hill Drive. Fallon Road south of Bent Tree Drive is still under construction and will not be surveyed at this time; however. when the southerly segment is complete and when the connection of Fallon Road to Tassajara Road is established in the future, it is recommended that the entire road be re-surveyed. This report contains a number of recommendations for installation of speed limit signs. Where speed limits are not being changed, the signing recommendations are in the process of being accomplished. For Fallon Road and Bent Tree Drive, where new speed limits are being established, the signs cannot be posted until the ordinance has been adopted and the appeal period has passed. Staff recommends that the City Council waive the reading and adopt the ordinance establishing speed limits on Central Parkway, Gleason Drive, North and South Dublin Ranch Drive, Signal Hill Drive, Bent Tree Drive, and Fallon Road. Page 3 of3 ld'b5D ORDINANCE NO. -07 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF DUBLIN ********* ESTABLISHING SPEED LIMITS ON CENTRAL PARKWAY (ARNOLD ROAD TO TASSAJARA ROAD), GLEASON DRIVE (ARNOLD ROAD TO TASSAJARA ROAD), NORTH AND SOUTH DUBLIN RANCH DRIVE, SIGNAL HILL DRIVE, BENT TREE DRIVE, AND FALWN ROAD (BENT TREE DRIVE TO SIGNAL HILL DRIVE) The City Council of the City of Dublin does ordain as follows: Section 1: Pursuant to Dublin Municipal Code Section 6.04.340, speed limits shall be established as follows: North Dublin Ranch Drive: South Dublin Ranch Drive: Signal Hill Drive: Bent Tree Drive: Central Parkway (Arnold Road to Tassajara Road): Gleason Drive: (Arnold Road to Tassajara Road): Fallon Road (Bent Tree to Signal Hill): 25 miles per hour 25 miles per hour 25 miles per hour 30 miles per hour 35 miles per hour 40 miles per hour 40 miles per hour Section 2. Said speed limits shall be added to City of Dublin Traffic Code Sections 6.60.010 (25 miles per hour), 6.60.020 (30 miles per hour), 6.60.030 (35 miles per hour), and 6.60.040 (40 miles per hour) as appropriate. Section 3: This ordinance shall become effective 30 days after its final passage and adoption by the City Council. The City Clerk of the City of Dublin shall cause this ordinance to be posted in at least three (3) public places in the City of Dublin in accordance with Section 36933 of the Government Code of the State of California. PASSED, APPROVED AND ADOPTED this 21st day of August, 2007. AYES: NOES: ABSENT: ABSTAIN: Mayor ATTEST: City Clerk G:ITRANSPORTATIONlLocal TrafficlSpeed SruveyslOrdtnance Central, Fallon et al Speed Limits.doc Page 1 ~-7.\ F 07 t-t,7I- ATTAfIHIT I 2'1J 57J DUBLIN SPEED LIMIT TRAFFIC ENGINEERlNGSTUDY SPEED SURVEYS FOR 2007 FINAL REPORT Prepared for THE CITY OF DUBLIN, CA June 8,2007 Ii!I . . I- mru@@DlJ~ E I'd G IN EE RS . P l ANN E R S ATTACIDIENT 2- 3~ ~() DUBLIN SPEED LIMIT TRAFFIC ENGINEERING STUDY: SPEED SURVEYS FOR 2007 Prepared For THE CITY OF DUBLIN, CA June 8, 2007 Prepared By OMNI-MEANS, LTD. Engineers & Planners 1901 Olympic Blvd., Suite 120 Walnut Creek, CA 94596 (925) 935-2230 (925) 935-2247 fax ~SD 1. INTRODUCTION a. Summary The following report presents the findings of an "engineering and traffic speed survey" conducted for the City of Dublin, California. The study consisted of radar speed surveys and analyses in order to assist the City in maintaining and setting appropriate vehicle speed limits. Speed surveys must be conducted and periodically updated as set forth in the California State Vehicle Code in order to ensure proper speed limits and enforceability by policing agencies. The analysis of each street segment included radar speed measurements, noting specific street characteristics, and reviewing accident histories. Speed limits are generally established by incorporating these factors along with the measured "85th percentile speed" (also called "critical speed"), which is defined as the speed at which 85 percent of the drivers are traveling at or below. The information gathered for each street is intended to assist in evaluating existing and future speed limits. Ultimately, the designation of a safe and efficient speed limit depends on sound engineering judgment. In addition, input from Dublin Police enforcement officers regarding these recommendations should be considered before establishing the speed limits. b. Results/Recommendations Existing conditions at 12 of the 15 streets indicate that maintaining the existing posted speed limits is recommended at this time (installing additional speed limit signs is recommended at some locations). Brighton Drive does not have a posted speed limit. For most of its length it qualifies as a "local" street, with a prima facie speed limit of 25 mph. However, a short section exceeds 40 feet in width, which is the maximum for "local" street definition. Therefore, it is recommended that the speed limit be established at 25 mph with corresponding speed limit signs installed. Bent Tree Drive does not have a posted speed limit. Based on the survey data, it is recommended that the speed limit be established at 30 mph and corresponding speed limit signs be installed. Fallon Road has no posted speed limits. Based on the survey data, it is recommended that the speed limit for the analyzed section of Fallon Road be established at 40 mph and corresponding speed limit signs be installed. The subsequent sections describe the data collection, analyses, and recommendations for each of the examined street segments. Speed Survey Study 2007 for the City of Dublin Page 1 ~~S-D 2. BACKGROUND METHODOLOGY Speed zoning or the application of designated vehicle speed limits is consistent with the State of California's laws for establishing prima facie speed limits on public streets. Typically, speed zoning is warranted on streets and thoroughfares where there are "appreciable" amounts of traffic volumes where speed zones would help contribute to the "orderly movement" of traffic by increasing driver awareness of a reasonable speed.! Not all streets require prima facie speed limits. These include well established business districts or urban areas where speed limits are clearly apparent. The basic goal of speed zoning is to prevent motorists from operating at a wide range of speeds along a thoroughfare which could create vehicle conflicts. Speed zoning allows motorists to travel at or near the same speeds. Speed limits range from absolute to prima facie. Absolute speed limits are usually found on freeways where the maximum speed limit (65 mph or 70 mph) cannot be exceeded. Prima facie ("on the face of it") speed limits are usually established through speed zoning studies. In some locations, there are automatic prima facie speed limits. These include a temporary 25 mph limit through school zones when children are present coming to/from school or 15 mph speed limits at uncontrolled railroad crossings. It is possible for a motorist to exceed the established prima facie speed limit if it is safe to do so under prevailing driving conditions. However, if the motorist is cited by a police officer, the motorist must prove that he/she was driving in a safe and prudent manner and not endangering other motorists. Consistent with the State of California Vehic1e Code requirements, speed zoning surveys must be updated periodically to ensure proper speed limits as well as continuing enforcement by police officials. Sections 40802 and 40803 of the California State Vehic1e Code defme the requirements for when speed surveys must be conducted? In general, a City with an on-going program in place which incorporates several criteria (including training of police officers in correct radar operation certified by the Commission on Peace Officer Standards and Training, radar devices that meet or exceed the minimal operational standards of the National Traffic Highway Safety Administration and have been calibrated within three years of the alleged violation) can survey a street every seven (7) years. The code goes on to state that, "If the engineering and traffic survey was conducted more than seven years prior to the date of the alleged violation, and a registered engineer evaluates the section of highway (roadway) and determines that no significant changes in roadway or traffic conditions have occurred, including, but not limited to, changes in adjoining property or land use, roadway width, or traffic volumes, (it shall be every) 10 years." In the absence of a program incorporating the criteria defined in Section 40802, a City should conduct a traffic and engineering survey every five (5) years. Note that the above time requirements do not apply to school zones or strictly local roads (which are defmed in Section 40802 as a roadway width of npt more than 40 feet, not more than one-half mile in length, and only one lane each direction). Speed Survey Study 2007 for the City of Dublin Page 2 ~ Vb 5"D 3. DATA COLLECTION a. Survey Locations The City identified 15 streets for analysis as a result of previous surveys expiring or the necessity to establish speed limits. Due to the length of several streets, radar surveys were conducted at more than one location in order to properly assess the conditions of the entire street segment. A total of 39 segments were surveyed.3 (Figure 1 provides a city map and Figure 2 illustrates the studied streets and approximate radar speed survey locations.) A minimum of 100 vehicle speed measurements were recorded at each location. For streets separated by a raised median, 100 measurements were recorded for each direction. In addition to the measured vehicle speeds, other characteristics associated with each street segment were identified. These include roadway alignments or slopes, street parking availability, adjacent land uses (residential or commercial properties) or nearby schools. Using accident data provided by the City, three year accident histories (2004-2006) for each street were identified and the number of speed related accidents were noted. (Table Al listing the recorded accidents is provided in the Appendix.) An accident rate for each street was calculated and compared to statewide averages for similar streets.4 The accident rate equation incorporates the number of accidents, the average daily traffic (ADT) volume, and street length to, produce a rate that reflects accidents per million vehicle miles of travel. Machine tube counts tabulating 24-hour volumes over several days were conducted on each studied street in order to obtain the daily traffic volumes.5 After compiling the data, a "Speed Limit Engineering/Traffic Study" worksheet was completed for each street. The worksheet contains information that includes posted speed limit, measured critical speed, roadway characteristics, accident rates, and the survey recommendations. Table 1 summarizes the findings for each street segment. A discussion of each street is then presented in the following section. (The engineering/traffic speed survey worksheets and the radar summary worksheets are provided in the Appendix.) Speed Survey Study 2007 for the City of Dublin Page 3 , . .r:: t i ~ ! ::J C) q:: Q.. co 2 >- ~ o c ..c :J o ~ en c:: tV CD E o DCJ tS @ @ g ~ 1:: t .z >. -0 ::s ...... (f) 0> c:: 'C Q) Q) c:: 0> c:: W t) .l:I:: :=:::-- roo ~..o SE .- >. .E(f) ~ I Q)>. ~m (f)-o ~Q) 0...... u..~ -o~ Q).c >..0> ~;;. ::s (f) en ...... c:: Q) E 0> Q) (f) ...... Q) Q) ~ ...... (f) DR. z o rn <{ w ..J ~ ARNOLD RD. z 1iJ t-= ~ () o seARLE DR. DOUGHERTY RD. N CU ... :J C) 'i: U) C ca CD E o 0= fS @ @ Speed Survey Study 2007 for the City of Dublin Page 6 q~5D N.P. = No Posted speed limit. 1 = Also a posted School Zone (25 mph when children present). 2 = Two yellow 30 mph warning speed limit signs posted for southbound direction near Gleason Dr. Speed Survey Study 2007 for the City of Dublin Page 7 10 6bS7) Il~5b 1. Bent Tree Drive (between E. Sugar Hill Terrace and Fallon Rd.) Description: Bent Tree Drive is a moderately curved two lane road (one lane each way) between E. Sugar Hill Terrace and Fallon Road. There is a raised center median between Twin Eagles Lane and Fallon Road. The street has a moderately steep grade (downhill north- to-south). The road is located in a residential neighborhood where intersecting streets provide direct residential access (there is no direct access from Bent Tree Drive). There is signalized control at Fallon Road, all-way stop control at E. Sugar Hill Terrace, and side street stop controls for the intersections in between. Street parking is allowed toward the north end of the road. There is also a golf course on both sides of Bent Tree Drive at the north end and golfers/golf carts cross at E. Sugar Hill Terrace. Speed Data: There are currently no posted speed limit signs on the street. Between E. Sugar Hill Terrace and Twin Eagles Lane the street qualifies as "local". However, between Twin Eagles Lane and Fallon Road it widens (to approximately 74 feet with a center median), but remains one lane each direction. The 85th percentile speed was calculated to be 37.9 mph. Recommendations: The somewhat elevated 85th percentile speed is likely due to the slope of the road (which typically results in higher speeds) and the absence of any existing speed limit signs. Given the road's curvature in addition to its slope, the street crossing activity associated with the golf course, and the predominantly residential nature of the area, it is recommended that the speed limit be set 30 mph as a base case and that speed limit signs be installed (for northbound motorists near Fallon Road and southbound motorists near E. Sugar Hill Terrace). Speed Survey Study 2007 for the City of Dublin Page 8 2. Betlen Drive (between Silvergate Dr. and Hansen Dr.) \ 2 ~J5T) Desc;ription: This segment of Betlen Drive is a straight road approximately 1,000 feet long with street parking and direct residential access on both sides. There is a short grade near Silvergate Drive. There are stop sign controls at both ends of the segment. Speed Data: There is a posted speed limit of 25 mph. The 85th percentile speed was measured at 28.7 mph. Recommendations: Based on the measured critical speed and the street characteristics, it is recommended that the 25 mph speed limit be maintained. Speed Survey Study 2007 for the City of Dublin Page 9 \ 36/) 50 3. Brighton Drive (between Village Pkwy. and Lucania St.) Description: This segment of Brighton Drive consists of two lanes (one each direction) with direct residential access, street parking, and is moderately curved. There is a community park along the south side between Bristol Road and Brighton Place. There is signalized control at Village Pkwy. and all-way stop control at Lucania Street. Dublin High School is located on the northeast corner of the Brighton DriveNillage Pkwy. intersection. Speed Data: There are currently no posted speed limit signs on this street segment. The surveyed critical speed was 32.7 mph. Recommendations: For most of its length Brighton Drive qualifies as a local street (40 feet wide or less, half-mile long or less, and one lane each direction) with a prima facie 25 mph speed limit. Given the 85th percentile speed, residential character of the street, adjacent park and nearby school, the 25 mph speed limit is appropriate and should remain unchanged. However, because the road width exceeds 40 feet between Cranford Lane and Village Pkwy. (approximately 52 feet wide), it is recornrnendedthat 25 mph speed limit signs be installed (one for westbound motorists near Village Pkwy. and one for eastbound motorists near Lucania Street). Speed Survey Study 2007 for the City of Dublin Page 10 Ic.t~ 4. Central Pkwy. (between Arnold Rd. and Tassajara Rd.) Description: Central Pkwy. is oriented in an east-west direction, extending from Arnold Road to newer development east of Tassajara Road. It consists primarily of two lanes (one each way) separated by a raised median. Adjacent land uses include office buildings on the west side, retail on the east side near Tassajara Road, and residential in between. Due to the length of the segment and the variations in adjacent land uses, the road was examined in five sections: Arnold Road - Hacienda Drive: This segment of Central Pkwy. serves large office buildings on both sides. There are central driveways located mid-block. Central Pkwy. has two lanes with a median west of these driveways and four lanes (two each way) east of the driveways to Hacienda Drive. There are signal controls at Arnold Road and Hacienda Drive. The segment is straight, flat, and there is no street parking. Hacienda Drive - Hibernia Drive: This segment is in a residential area with condominiums and town homes on each side. It has two lanes (one each way) with a median. The segment is straight and flat and street parking is provided in curb "cut-outs" in some locations. There is a school located at the northeast comer of the Central Pkwy.IHibernia Drive intersection. Hibernia Drive - Persimmon Drive: This segment has very similar characteristics to the Hacienda Drive - Hibernia Drive segment. The school is located along the north side between Hibernia Drive and Aspen Street and is a posted "school zone' (25 mph when children present). Persimmon Drive - Glynnis Rose Drive: This segment is also similar to the previous segments. However the road has a long broad curve and there is a large regional park (Emerald Glen Park) along the north side. Glynnis Rose Drive - Tassajara Road: This is a short segment between two signalized intersections. It consists of two lanes (one each way) with a center median. There is a mixed-use residential/retail complex on the south side and the regional park continues along the north side. Street parking is allowed on the north side. The south side has a single private tenant garage driveway. Speed Data: The road has a posted speed limit of 35 mph between Central Pkwy. and Tassajara Road. The radar survey locations and the measured 85th percentile speeds are listed as follows: Arnold Rd.- Hacienda Dr.: Hacienda Dr. - Hibernia Dr.: Hibernia Dr. - Persimmon Dr.: Persimmon Dr. - Glynnis Rose Dr.: Glynnis Rose Dr. - Tassajara Rd.: 85th percentile speed = 35.2 mph 85th percentile speed = 37.1 mph 85th percentile speed = 38.6 mph 85th percentile speed = 38.1 mph 85th percentile speed = 36 mph Speed Survey Study 2007 for the City of Dublin Page 11 Recommendations: Based on the street characteristics in combination with measured 85th percentile speeds, it is recommended that the 35 mph speed limit be maintained for Central Pkwy. between Arnold Road and Tassajara Road. Currently the first speed limit sign encountered by westbound motorists from Tassajara Road is located just east of Killian Street. It is recommended that a speed limit sign be posted further east, either by moving the sign near Killian Street or installing an additional sign just west of Tassajara Road. Speed Survey Study 2007 for the City of Dublin Page 12 \ Sfb;;() , ~ "b >l;> 5. Clark Avenue (between Dublin Blvd. and Village Pkwy.) Description: This segment of Clark Avenue is a wide two lane road (one lane each way) that is flat and straight as it extends south from Dublin Blvd. The roadway then curves sharply at the south end (where it becomes Village Pkwy.). There are a few driveways serving offices located along the side of the road. Speed Data: The segment has a posted speed limit of 30 mph. The measured critical speed was 29.7 mph. Recommendation: Based on the street characteristics and measured critical speed, it IS recommended the 30 mph speed limit be maintained. Speed Survey Study 2007 for the City of Dublin Page 13 11trb~ 6. Creekside Drive (between Silvergate Dr. and Brittany Dr.) Description: Creekside Drive extends from Silvergate Drive to Brittany Drive and is a residential. It also experiences some vehicle "through" trips between Silvergate Drive and Iglesia Drive or Rolling Hills Drive. It is sloped (downhill north~to~south) with grades varying from moderate to steep and there are several curves. Speed Data: The street has a posted 25 mph speed limit. Radar surveys were conducted at three locations: Silvergate Dr. - Iglesia Dr.: This is a short segment that is curved and relatively steeply graded. The measured 85th percentile speed was 28.8 mph. Iglesia Dr. - Vista PI.: This is a long and straight section that is moderately sloped. The measured 85th percentile speed was 36.2 mph. Vista PI. - Brittany Dr.: This is a shorter segment with tight curves and a relatively steep slope. The measured 85th percentile speed was 33 mph. Recommendation: The slope of the road is a contributing factor in the difference. between the posted 25 mph speed limit and two of the measured 85th percentile speeds. However, given the road's steeply sloped and curved sections, in addition to the predominantly residential nature of the street, it is recommended that the speed limit be maintained at 25 mph. Although speed limit signs are posted at several locations, it is recommended that an additional 25 mph speed limit sign be installed for southbound motorists near Rolling Hills Drive. Speed Survey Study 2007 for the City of Dublin Page 14 \~ Vb :;iO 7. Dublin Boulevard (between San Ramon Rd. and Sierra Ct./Civic Plaza) Description: This portion of Dublin Blvd. is a major arterial street through the downtown commercial area. There are six lanes (three each way) with a center median and no street parking. In this area Dublin Blvd. consists predominantly of short blocks between signalized intersections and numerous retail driveways along both sides of the street. There is a moderate curve between Village Pkwy. and Clark Avenue. Speed Data: The posted speed limit is 35 mph for the length of the analyzed section. The radar survey locations and the measured 85th percentile speeds are listed as follows: San Ramon Rd. - Golden Gate Dr.: Golden Gate Dr. - Amador Plaza Rd.: Amador Plaza Rd. - Village Pkwy.: Village Pkwy. - Clark Ave.: Clark Ave. - Sierra Ct. / Civic Plaza: 85th percentile speed = 38.7 mph 85th percentile speed = 33.7 mph 85th percentile speed = 36.2 mph 85th percentile speed = 31.5 mph 85th percentile speed = 40.0 mph Recommendation: Based on the measured critical speeds, prevailing traffic flows, and presence of retail driveways and cross streets which result in numerous turning movements into and out of Dublin Blvd., it is recommended that the 35 mph speed limit be maintained throughout the section. SpeedSurvey Study 2007 for the City of Dublin Page 15 \?tUb>D 8. Fallon Road (between Bent Tree Dr. and Signal Hill Dr.) Description: This section of Fallon Road is a wide, four-lane street with a center median. There is limited side street access to newer residential development in east Dublin. There is no street parking. The road was examined in three segments: Bent Tree Dr. - Gleason Dr.: This is a straight, flat segment between two signalized intersections. Field observations indicate this segment experiences a combination of higher speed "through trips" and lower speed trips by motorists turning to/from Bent Tree Drive from/to Gleason Drive. These drivers must change lanes within this block in order to turn at each respective intersection. Gleason Dr. - Antone Wy: This is a flat,but moderately curved, segment between two signalized intersections, with no side streets or driveways between the two intersections. Antone Wy. - Signal Hill Dr.: This is a longer segment that is moderately sloped (downhill north-to-south). It is straight from Signal Hill Drive through the sloped portion, then is moderately curved and flattens near Antone Way. There is one side street on the west side at the signalized Tumberry Drive intersection in the middle of the segment. Field observations indicate the signals are usually "green" for Fallon Road travel due to relatively low volumes to/from Tumberry Drive. Speed Data: There are currently no posted speed limits along this analyzed section of Fallon Road. The radar smvey locations and the rneasmed 85th percentile speeds are listed as follows: Bent Tree Dr. - Gleason Dr.: Gleason Dr. - Antone Wy.: Antone Wy. - Signal Hill Dr.: 85th percentile speed = 41 mph 85th percentile speed = 48 mph 85th percentile speed = 49,6 mph Recommendations: The measmed 85th percentile speeds between the Bent Tree Dr.-Gleason Dr. and Gleason Dr.-Signal Hill Dr. street segments range from 41-49.6 mph, a difference of approximately 8 mph. Higher vehicle speeds are likely due to the slope of the road and the longer distance. between intersections. The lower speed section includes slower moving vehicles traveling to/from Bent Tree Drive and Gleason Drive. Fallon Rd. south of Bent Tree Dr. to 1-580 introduces additional speed characteristics to the Fallon Rd. corridor. This section narrows to two lanes with dirt shoulders, hilly terrain, and some pronounced curves. There are yellow 30 mph speed limit warning signs posted at the curved locations. (This section will be replaced by a newly constructed fom lane road with signalized controls at major cross-street intersections.) Other factors contributing to the speed limit recommendation for Fallon Rd. include the presence of pedestrians crossing Fallon Rd. to/from schools located to the west. In addition, the Gleason Rd. eastbound approach to Fallon Rd. consists of two right-turn lanes. Consequently, vehicles in the outside right-turn lane travel across one lane of southbound Fallon Rd., creating another potential area of conflict. Speed Survey Study 2007 for the City of Dublin Page 16 20rfbSD To . accommodate the various speed conditions and segment characteristics while still providing for consistent speeds through the Fallon Rd. corridor, iris recommended that the speed limit be established at 40 mph between Bent Tree Drive and Signal Hill Drive. After a six month trial period, it is recommended that another traffic/engineering study with new radar surveys be conducted and the speed limits reexamined at that time. There are currently two yellow 30 mph warning signs for the southbound travel direction located just north and south of the Gleason Drive intersection. With the improvements that have been made to Fallon Road in this area, the signs are no longer appropriate and should be removed or relocated south of the Bent Tree Drive intersection. Speed Survey Study 2007 for the City of Dublin Page 17 21Jb 50 9. Gleason Drive (between Arnold Rd. and Tassajara Rd.) Description: Gleason Drive is oriented in an east-west direction extending from Arnold Road to the intersection at Tassajara Road then continues into newer development further east. Between Arnold Rd. and Tassajara Rd. it consists of four lanes (2 each way) with a center median. Speed Data: The speed limit is 40 mph for the length of the studied section. Radar surveys were conducted on the following segments: Arnold Rd. - Hacienda Dr: This segment is straight and flat with no street parkin~ and limited driveway access to office buildings on the south side. . The measured 85t percentile speed was 40.7 mph. Hacienda Dr. - Creekview Dr.: This section is straight from Hacienda Drive, then there is a moderate "S~curve" near Barnet Blvd. where it becomes straight again to Creekview Drive. There is no street parking and there are a few side streets and commercial driveways on the north side. The curved portion is posted with yellow 35 mph warning signs. The measured 85th percentile speed was 42 mph. Creekview Dr. - Tassajara Rd.: This is a straight flat segment between two signalized intersections. There is no access along the north side and there is a large regional park (Emerald Glen Park) with ball fields and a skateboarding area along the south side. The measured 85th percentile speed was 42.2 mph. Recommendations: Based on the measured 85th percentile speeds and road characteristics, it is recommended that the 40 mph speed limit (and 35 mph speed limit through curved section) be maintained. Speed Survey Study 2007 for the City of Dublin Page 18 ?2.1J5D 10. Grafton Street (between Antone Wy. and Gleason Dr.) Description: This segment of Grafton Street is a straight two lane road with a moderate slope (downhill north-to-south) from Castleton Lane to Madden Way. There is a center median beginning 100 feet north of Madden Way that extends to Gleason Drive. Street parking is allowed north of Madden Way. There is a school along the west side. Speed Data:' The street is posted with 25 mph limit signs and school zone signs. The measured 85th percentile speed was 36 mph. Recommendation: The 85th percentile speed is somewhat higher than the 25 mph speed limit. This likely results from the slope of the road. However, due to the adjacent school, posted school zone, on-street parking, and nearby residential homes it is recommended that the 25 mph speed limit be maintained. Speed Survey Study 2007 for the City of Dublin Page 19 '2 ~ ~5l:> 11. North Dublin Ranch Drive (between Tassajara Rd. and Antone Wy.) Description: Narth Dublin Ranch Drive extends east fram Tassajara Raad then curves sauth to. merge with Sauth Dublin Ranch Drive farming a laap raad back to. Tassajara Raad. It is a two. lane raad (ane lane each way) that provides direct residential access and also. carries thraugh trips between Tassajara Raad, Antane Way, and ather side streets. Speed Data: The street has a pasted 25 mph speed limit. Radar'surveys were taken an the fallawing segments: Tassajara Rd. - Raund Hill Dr.: This segment is curved and slaped (dawnhill east-ta- west). There is a median fram Tassajara Raad to. appraximately 200 feet east af Springvale Drive. The Tassajara Raad intersectian is signalized, the Springvale Drive approaches are stap cantralled, and the Raund Hill Drive intersectian is all-way stap cantralled. There is no. direct residential access an this segment, but there are residential hames east af Round Hill Drive. The measured 85th percentile speed was 36 mph. Raund Hill Drive - Oak Bluff Lane: This is a curved, ane-black segment between all- way stap cantralled intersectians, with residential hames and parking alang bath sides af the street. The measured 85th percentile speed was 26.8 mph. Oak Bluff Lane - Antane Way: This is also. a curved ane-black segment with direct residential access and all-way stap cantrols at bath ends. There is a cammunity park alang the east side af the .street. The measured 85th percentile speed was 28 mph. Recommendations: The 85th percentile speed is samewhat higher than the speed limit an the segment between Tassajara Raad and Raund Hill Drive. This is likely due to. the slope afthe raad. Hawever, due to. ather factars including the curvature af the raad and praximity af residential hames, it is recammended that the existing 25 mph speed limit be maintained far N. Dublin Ranch Drive between Tassajara Raad and Antane Way. Speed Survey Study 2007 for the City of Dublin Page 20 -; 4Vbso 12. South Dublin Ranch Drive (between Tassajara Rd. and Antone Wy.) Description: South Dublin Ranch Drive extends east from Tassajara Road then curves north to merge with North Dublin Ranch Drive forming a loop road back to Tassajara Road. Similar to North Dublin Ranch Drive, it is a two lane road (one lane each way) and provides direct residential access while carrying through trips between other streets. There is signalized control at Tassajara Road and all-way stop control at Antone Way. The intersections of Spring vale Drive, W oodshire Lane, and Blackstone Road are minor-street stop controlled. Speed Data: The street has a posted 25 mph speed limit. Radar surveys were taken on the following segments: Tassajara Road - Woodshire Lane: This section is curved and sloped (downhill east- to-west) between Woodshire Lane and Tassajara Road. The slope crests at Woodshire Lane and there is a pedestrian crosswalk on the west side of the intersection. A school speed zone is designated near Woodshire Lane. The measured 85th percentile speed was 32.4 mph. W oodshire Lane - Antone Way: This is a curved, flat section with direct residential access and street parking along the north side. There is a swimming pool facility on the south side. A raised median separating travel directions is located between W oodshire Lane and Blackstone Road. The posted speed limit is 25 mph and the section is a posted school speed zone. The measured 85th percentile speed was 34.6 mph. The higher 85th percentile speed (compared to the posted speed) was observed to occur primarily for the eastbound direction. (Directional summaries found an 85th percentile speed of 30.5 mph for westbound travel and 35 mph for eastbound travel.) The higher eastbound speed could be due to the absence of driveways/development on the south side, a median separating travel directions on the north side, and a relatively long segment between stop controls. Recommendations: Based on the factors associated with this street (residential access, designated school zone, pedestrian activity to/from pool, on-street parking, curvature of the road, and residential nature of the street), it is recommended that the speed limit be maintained at 25 mph for South Dublin Ranch Drive between Tassajara Road and Antone Way. Speed Survey Study 2007 for the City of DubJin Page 21 '2~6b~ 13. Scarlett Drive (between Dublin Blvd. and Scarlett Ct.) Description: Scarlett Drive consists of two one-way streets that extend between the Dublin Blvd. and Scarlett Ct. intersections. Each street is a flat, straight road with two travel lanes in one direction and no street parking. There are vehicle sales dealerships with driveways on the northbound street and two low volume driveways on the southbound street. Speed Data: The streets have a posted speed limit of 35 mph. The surveyed 8Sth percentile speed was 34.6 mph for the northbound street and 36 mph for the southbound street. Recommendation: It is recommended that the existing 35 mph speed limit be maintained. Speed Survey Study 2007 for the City of Dublin Page 22 2~~ 14. Signal Hill Drive (between Fallon Rd. and E. Sugar Hill Terrace) Description: Signal Hill Drive extends east from Fallon Road then curves south on a moderate slope (uphill north-to-south), cresting at E. Coghill Terrace. The roadway then continues south with broad curves and a moderately steep slope (downhill north-to-south) to E. Sugar Hill Terrace. It is a two lane street (one lane each way). Between E. Coghill Terrace and E. Sugar Hill Terrace it is a residential street with street parking. Between E. Coghill Terrace and Fallon Road it remains one lane each direction, but widens with a raised center median. This block has a few houses on the north side of the street and a golf course/country club facility on the west side. Speed Data: Radar surveys were conducted on the following segments, Fallon Rd. - E. Coghill Tr.: There is no posted speed limit on this segment. Although this segment could be defined as a local street for most of its length (prima facie 25 mph speed limit), it exceeds 40 feet in width near Fallon Road where the median is located. The measured 85th percentile speed was 32.9 mph. E. Coghill Tr. - E. Sugar Hill Tr.: There is a 25 mph speed limit sign for the southbound travel direction located just south of E. Coghill Tr. (where Signal Hill Drive begins its downhill slope.) The measured 85th percentile speed was 29.5 mph. Recommendation: Based on the 85th percentile speeds, grade variations and curvature of the road, direct residential driveway access, and street parking, it is recommended that the 25 mph speed limit be maintained. In order to clarify the speed limit, it is recommended that two 25 mph speed limit signs be installed in addition to the single existing sign. It is recommended one sign be installed for southbound motorists near Fallon Road and another be installed for northbound motorists near E. Sugar Hill Terrace. Speed Survey Study 2007 for the City of Dublin Page 23 2'1fb9) 15. Village Pkwy. (between the Dublin City Limit and Clark Ave.) Description: Village Pkwy. is oriented in a north-south direction and extends from Alcosta Blvd. south through the City's northern limit line to Clark Avenue. It extends through predominantly residential areas in the north and retail areas in the south. Between the City limit and Amador Valley Boulevard, there are four travel lanes (two each way), a center median, no street parking, and relatively few side streets or driveways. Between Amador Valley Boulevard and Dublin Boulevard it remains four travel lanes with a median. However, street parking is allowed and there are numerous retail/commercial driveways on both sides of the street. From Dublin Blvd. south to Clark A venue there are two lanes (one each way) and no center median. Speed Data: There is a posted speed limit of 35 mph between the City limit and Amador Valley Boulevard. The speed limit is posted at 30 mph between Amador Valley Blvd. and Clark Avenue. Radar surveys were conducted on the following segments: City Limit - Davona Drive: This is a flat, straight segment with four lanes and median, no street parking, and very limited side street access. A school speed zone is posted near the Davona Drive intersection. The posted speed limitis 35 mph. The surveyed 85th percentile speed was 40.1 mph. Davona Drive - Brighton Drive: This segment is similar to the City Limit - Davona Drive segment with four lanes, median, and no parking. There is a moderate curve at Davona Drive. A high school and swimming pool complex are located along the east side of the road. This segment is a posted school ~eed zone (25 mph when children are present). The speed limit is 35 mph. The surveyed 85 percentile speed was 39 mph. Brighton Drive - Tamarack Drive: This segment has four lanes, a median, and no parking. There are no side street accesses on this segment. The speed limit is 35 mph. The surveyed 85th percentile speed was 40.8 mph. Tamarack Drive - Amador Valley Boulevard: This segment consists of four lanes, a raised center median, and no parking. It is flat, but there is a moderate curve in the road. There are gaps in the median which allow outbound left turns from some side streets/driveways. The speed limit is 35 mph. The surveyed 85th percentile speed was 35.4 mph. Amador Valley Boulevard - Dublin Boulevard: This segment consists of four lanes with a center median. However, retail businesses are located along each side of the street with numerous commercial driveways and street parking is allowed. The posted speed limit on this segment is 30 mph. The surveyed 85th percentile speed was 29.1 mph. Dublin Boulevard - Clark Avenue: This segment consists of two lanes (one each way) and there is no center median. The road is straight until merging with Clark Avenue. There is a freeway on-ramp mid-block on the west side and retail center access on the east side. South of the on-ramp, there are a few office building driveways and street parking is Speed Survey Study 2007 for the City of Dublin Page 24 2~1S'D allowed. The posted speed limit is 30 mph. The measured 85th percentile speed was 29.1 mph. Recommendations: Based on the measured critical speeds and observed characteristics of each segment, it is recommended that the existing speed limit of 35 mph between the City limit and Amador Valley Boulevard be maintained. The. existing speed limit of 30 rnph between Amador Valley Boulevard and Clark Avenue should also be maintained. Speed Survey Study 2007 for the City of Dublin Page 25 2.&t ~ 5D References 1. California State Automobile Association, Realistic Speed Zoning: Why and How, 1976. 2. Department of Motor Vehicles, State of California Vehicle Code, Speed Traps (Sections 40802 and 40803), January 2006. 3. Omni-Means Engineers & Planners, Radar Speed Surveys conducted in the City of Dublin, February - April, 2007. 4. California Department of Transportation, 2002 Collision Data on California State Highways (Road Miles, TraveL Collisions, Collision Rates), Business, Transportation, and Housing Agency, Division of Traffic Operations, Sacramento, CA. 5. Omni-Means Engineers & Planners and Baymetrics Traffic Data Services, Machine Tube Counts conducted in the City of Dublin, April, 2007. Speed Survey Study 2007 for the City of Dublin Page 26 Street: Bent Tree Drive Limits: Fallon Rd. to E. SUQar Hill Tr. Length (feet): 1 .900' Location of Survey: Near Piper Glen Tr. 3/19/07 not osted 27 -36 mph 71;20;9 37.9 m h 18-46 mph Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Width (ft.): 40'-74' No. of Lanes (Both Directions): 2 (1 each way) Average Daily Traffic: 3.364 Date Taken: 4/24-26/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): median btwn. Fallon Rd. & Twin Eaqles Ln.: North-to-south downhill slope: moderatel~rved road; Street parkinq on northern portion; Residential area (but no direct driveway access) Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 2 ('04 = 0, '05 = 0, '06 = 2) Number of Speed Related Accidents (Total and Each Year): 0 Calculated Accident Rate: 1.51 acc.lm.v.m. Statewide Average Rate: 2.03 Recommendations: Based on the street's characteristics, which include curvature, slope, some pedestrian activity, but also limited parkinq and the absence of residential access, combined with the surveyed critical speed, it is recommended that the speed limit be established at 30 mph and speed limit siqns be installed (near Fallon Rd. and E. Suqar Hill Tr.). + N Study Prepared By: Omni-Means Enqineers & Planners Date: 4107 ~ ~~f;~~/Jyh':-". // . . Approved Speed Limit: 30 m h Per CVC 40803, Survey Expires: 3/19/2014 Street: Betlen Drive Limits: between Silverqate Dr. & Hansen Dr. Length (feet): 1.000' Location of Survey: btw. Silvergate & Hansen 2/17,23/07 25 m h 21-30 m h 83; 8; 9 28.7 m h 15-34 m h Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Width (ft.): 47' No. of Lanes (Both Directions): 2 (1 each way) Average Daily Traffic: 441 Date Taken: 4/24-26/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): residential street that also serves some throuqh trips; stop controls at both ends; straiqht; moderate qrade near Silverqate: on-street parkinq; direct residential access Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 2 ('04 = 1. '05 = 1 , '06 = 1) Number of Speed Related Accidents (Total and Each Year): 1 ('04 = 1. '05 = O. '06 = 0) Calculated Accident Rate: 21.8 acc.lm.v.m.* Statewide Average Rate: 2.03 *Includes intersection aces. at ends of segment but not the cross street volumes, resulting in higher rate. There were zero accidents between the intersections at each end of the anal zed se ment. Recommendations: The critical speed and surveyed street characteristics indicate the existinq speed limit of 25 mph should be maintained. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 APprove~~~~th~'f7)ih Date. ~ 7 Approved Speed Limit: 25 mph Per CVC 40803, Survey Expires: 2/17/2014 . N Street: Briqhton Drive Limits: between Villaqe Pkwy. & Lucania St. Length (feet): 1.300' Location of Survey: Cranford Ln. to Hansen PI. 2/17,23/07 None (p.f. 25?) 24-33 m h 81; 14; 5 32.7 m h 20-40 m h Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Width (ft.): 40'-52' No. of Lanes (Both Directions): 2 (1 each way) Average Daily Traffic: 2.319 Date Taken: 4/24-26/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): residential street that also serves some throuqh trips; flat with moderate curves at each end; on-street arkin . direct residential access' ark tennis courts la round south side' school east end Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 6 ('04 = 3, '05 = 2, '06 = 1) Number of Speed Related Accidents (Total and Each Year): 4 ('04 = 1. '05 = 2. '06 = 1) Calculated Accident Rate: 9.45 accs.lm.v.m. Statewide Average Rate: 2.05 Recommendations: The critical speed combined with the street characteristics which include residential. park, and school uses. and sliqhtly elevated accident rate (includinq 4 speed related accidents) indicate a 25 mph speed limit should be maintained. In order to clarif the seed limit install seed limit siqns (one near Villaqe Pkwy. and one near Lucania St.) ~ C/'J Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 ~~i~oveJ&-~#~ Approved Speed Limit: 25 mph Per CVC 40803, Survey Expires: 2/17/2014 .. N Street: Central Pkwy. Limits: between Arnold Rd. & Hacienda Dr. Length (feet): 1 ,450' Location of Survey: Arnold Rd. to Hacienda Dr. 4/4//07 35 m h 24-33 m h 62; 14;24 35.2 mph 19-46 mph Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Width (ft.): 94'-100' No. of Lanes (Both Directions): 2-4 (1-2 each with median) Average Daily Traffic: 2,037 Date Taken: 4/17-19/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): mid-block driveways to larqe office buildinqs, most trips are to/from them; 4 lanes east of driveways, 2 lanes west"sli ht curve' flat' no arkin . stri ed shoulders osted 'bike lane' Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): Arnold ~ Tass. 6 ('04 = 3, '05 = 1 , '06 = 2) Number of Speed Related Accidents (Total and Each Year): 0 Calculated Accident Rate: 1.83 acc.lm.v.m. Statewide Average Rate: 2.03 Recommendations: The measured critical speed and survey data indicate that maintaininq the 35 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 ~~r;~~J}o:rlU~~~ Approved Speed Limit: 35 mph Per CVC 40803, Survey Expires: 4/4/2014 d ,~---_._----_._ ~ ~ ~~~~~::::~-y:~ o <( z C II:: rn <( u <( J: + N Street: Central Pkwy. Limits: between Hacienda Dr. & Tassaiara Rd. Length (feet): 4.600' Location of Survey: Hacienda to Hibernia to Persimmon to Glynnis Rose to Hibernia Dr. Persimmon Dr. GI nnis Rose Tassa'ara Rd. Date Taken: 3/8/07 3/8/07 3/10,13/07 3/10,13/07 Posted Speed: 35 m h 35 mph 35 m h 35 m h Pace Speed: 27-36 m h 28-37 m h 30-39 mph 27-36 % in Pace, Above, Below 69; 20; 11 69; 14;7 78; 10; 12 76; 14; 10 Critical Speed (85%) 37.1 mph 38.6 mph 38.1 mph 36 mph Range of Speeds 21-46 m h 23-47 25-51 mph 22-42 Width (ft.): 64'-90' No. of Lanes (Both Directions): 2 (1 each way with median) Average Daily Traffic: 2.267-3.269 Date Taken: 4/17-19/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): flat s-curve Killian to Glynnis Rose; street parkinq on some seqments ; mostly residential west. retail east; school near Hibernia - As en' lar e communi ark near Killian - Tassa'ara Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): Arnold - Tass. 6 ('04 = 3, '05 = 1, '06 = 2) Number of Speed Related Accidents (Total and Each Year): 0 Calculated Accident Rate: 1.83 acc.lm.v.m Statewide Average Rate: 2.03 Recommendations: The measured critical speed and survey data indicate that maintaininq the 35 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 APprove~/d:?L..-Y'~. ) Date: ~ .. Approved Speed Limit: 35 mph Per eve 40803, Survey Expires: 3/8/2014 ~ en z w 02 . ~ o ll::: <( '#1'--.. 0 ,--, ...-- --..., z o :a: :a: en ll::: ~ ,#"-; .,. ....."" w <( :g. ll::: ll::: ~ <( en en Z ~ s: I- ..J C) ci ll::: ...-.. <( o z w (3 <( :r: <( "'cer.J'l'RAL PKWr'. Z ll::: W 113 5: . N Street: Clark Ave. Limits: between VillaQe Pkwy. & Dublin Blvd. Length (feet): 600' Location of SUNey: Village Pkwy. to Dublin 81. 3/26/07 30 m h 22-31 m h 84;9;7 29.7 mph 17-35 mph Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Width (ft.): 43' No. of Lanes (Both Directions): 2 (1 each way) Average Daily Traffic: 1.261 Date Taken: 4/24-26/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): seqment is curved at south end; flat; on-street parkinQ; serves office buildinQs on both sides Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 1 ('04 = O. '05 = 1. '06 = 0) Number of Speed Related Accidents (Total and Each Year): 0 Calculated Accident Rate: 6.58 acc.lm.v.m. Statewide Average Rate: 2.05 Recommendations: The measured critical speed and survey data indicate that maintaininQ the 30 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 ~~i;~ve~~/.LdJA.I7}dA7U / Approved Speed Limit: 30 mph Per CVC 40803, Survey Expires: 3/26/2014 .. N Street: Creekside Drive Limits: btwn. Silverqate Dr. & Brittany Dr. Length (feet): 4,000' Location of Survey: Silvergate to Iglesia Dr. to Vista PI. to I lesia Dr. Vista PI. Brittan Dr. Date Taken: 3/24,26/07 3/24,26/07 3/30/07 Posted Speed: 25 m h 25 m h 25 mph Pace Speed: 23-32 mph 28-37 m h 24-33 m h % in Pace, Above, Below 91,4,5 82,11,7 82,3, 15 Critical Speed (85%) 28.8 m h 36.2 mph 33 m h Range of Speeds 21-40 m h 23-43 m h 22-41 mph Width (ft.): 36'-42' No. of Lanes (Both Directions): 2 (1 each way) Average Daily Traffic: 1.241 Date Taken: 4/24-26/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): residential street; on-street parkinq; north to south downward slope; lonqerstraiqht section with curves near each end of street; Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 1 ('04 = 0, '05 = 1, '06 = 0) Number of Speed Related Accidents (Total and Each Year): 1 ('04 = 0, '05 = 1, '06 = 0) Calculated Accident Rate: 0.97 acc.lm.v.m. Statewide Average Rate: 2.03 Recommendations: The surveyed street characteristics and measured critical speed indicate the existinQ speed limit of 25 mph should be maintained. It is recommended that an additional speed limit siqn be installed for southbound motorists iust south of Rollinq Hills Dr. in order to reinforce the speed limit in this area. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 . r# APProve~j) ~4M Y7p - . Date: ~ Approved Speed Limit: 25 mph Per CVC 40803, Survey Expires: 3/24/2014 .. N Street: Dublin Blvd. Limits: btwn. San Ramon Rd. & Villaqe Pkwy. Length (feet): 3.800' Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds San Ramon Rd. to Golden Gate 3/8/07 35 m h 30-39 m h 75; 13; 12 38.7 m h 23-47 m h Golden Gate to Amador Plaza 3/16/07 35 m h 27-36 mph 87; 5; 8 33.7 mph 23-46 m h Width (ft.): 90'-100', 86'-90'. 90'-100' No. Lanes (Both Directions): 6 ( 3 each way with median) Average Daily Traffic: 26,966-29,625 Date Taken: 4/17-19/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): flat no parkinq: curve btwn. Villaqe Pkwy. & Clark: multiple siqnalized intersections: retail driveways alonq both sides of street Accident Period Analyzed: 2004 - 2006 (San Ramon Rd. - Sierra Ct./Civic Plaza) Number of Accidents (List Total and Each Year): 102 ('04 = 33, '05 = 35, '06 = 34) Number of Speed Related Accidents (Total and Each Year): 22 ('04 = 6. '05 = 5. '06 = 11) Calculated Accident Rate: 2.83 acc.lm.v.m. Statewide Average Rate: 2.20 Recommendations: The measured critical speed and survey data indicate that maintaininq the 35 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 ~~i;~~fmde:u-<Y/" )UzEu Approved Speed Limit: 35 mph Per CVC 40803, Survey Expires: 3/8/2014 ;0 p + N Street: Dublin Blvd. Limits: Villaqe Pkwy. to Sierra Ct./Civic Plaza Length (feet): 2,100' Location of Survey: Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Village Pkwy. to Clark Ave. 4/1/07 35 mph 25-34 m h 93;4; 3 31.5 mph 23-42 m h Clark to Sierra! Civic Plaza 3/27/07 35 mph 30-39 m h 71;18;11 40 m h 23-49 m h Width (ft.): 88'-102, 88'-102', No. of Lanes (Both Directions): 6 ( 3 each way with median) Average Daily Traffic: 30,052-32,164 Date Taken: 4/17-19/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): flat; no parkinq; curve btwn. Villa e P . & Clark Ave.' retail drivewa s alan both sides of street Accident Period Analyzed: 2004 - 2006 (San Ramon Rd. - Sierra Ct./Civic Plaza) Number of Accidents (List Total and Each Year): 102 ('04 = 33, '05 = 35, '06 = 34) Number of Speed Related Accidents (Total and Each Year): 22 ('04 = 6, '05 = 5, '06 = 11) Calculated Accident Rate: 2.83 acc.lm.v.m. Statewide Average Rate: 2.20 Recommendations: The measured critical speed and survey data indicate that maintainino the 35 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 ~i;~"~.9~b~p:hJ Approved Speed Limit: 35 mph Per CVC 40803, Survey Expires: 3/27/2014 + N Street: Fallon Rd. Limits:. between Bent Tree Dr. & Siqnal Hill Dr. Length (feet): 4,600' Date Taken:. Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Bent Tree to Gleason Dr. 3/16/07 not posted* 29-38 mph 63,29,8 41 mph Gleason to Antone W . 3/18,19/07 not osted* 36-45 mph 63,27,10 48 mph Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 5 ('04 = 3, '05 = 2, '06 = 0) Number of Speed Related Accidents (Total and Each Year): 2 ('04 = 1 , '05 = 1 , '06 = 0) Calculated Accident Rate: 1.68 acc./m.v.m. Statewide Average Rate: 2.20 Recommendations: Based on the street characteristics and measured critical speeds, it is recommended that the speed limit be established at 40 mph on Fallon Rd. between Siqnal Hill Dr. and Bent Tree Dr., and that speed limit siqns be installed. Also, remove (or relocate to south of Bent Tree Dr.) the two existinq vellow 30 mph siqns near Gleason Drive. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 APprove~/aYlh';'J" y/y~ Date: 7- / Approved Speed Limit: 40 mph Per CVC 40803, Survey Expires: 3/16/2014 ANTONE WY. ~ .. N Street: Gleason Dr. Limits: btwn. Arnold Rd. & Tassaiara Rd. Length (feet): 4,600' Location of Survey: Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Hacienda Dr, to Creekview Dr. 3/23,24/07 40 mph* 31-40 mph 74;22;4 42 mph 27-51 m h *yellow 30 mph warnin Creekview to Tassa'ara Rd. 3/23,24/07 40 m h 34-43 mph 76; 14; 10 42.2 25-53 Width (ft.): 86'-104' No, of Lanes (Both Directions): 4 ( 2 each way with median) Average Daily Traffic: 3,410-7,092 Date Taken: 4/17-19/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): flat: no parkinq; elonqated s-curve near Barnet Blvd (posted 35 mph); larqe community park with ball fields/skate ark on south side Creekview to Tassa'ara: limited access north side and west of Hacienda Dr. Accident Period Analyzed: 2004 - 2006 i Number of Accidents (List Total'and Each Year): 10 ('04 = 2, '05 = 5, '06 = 3) Number of Speed Related Accidents (Total and Each Year): 3 ('04 = 1 , '05 = 1 ,'06 = 1) Calculated Accident Rate: 1.96 acc./m,v.m. Statewide Average Rate: 2.20 Recommendations: The measured critical speed and survey data indicate that maintaininq the 40 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 ~ APProve~ ~#~.;-'..rr) Date: 7. A ~ / Approved Speed Limit: 40 mph Per CVC 40803, Survey Expires: 3/23/2014 z c( () ci a 0:: ..G.LEASON ~ -- 0--' Ii. c5 0 z ~ 0::: 0 ~ z w o ~ J: ci 0:: ~ 0::: ~ .., ~ (I) CIl ~ t- . N Street: Grafton St. Limits: btwn. Gleason Dr. & Antone Wy. Length (feet): 1,475' Location of Survey: Gleason Dr. to Antone W . 3/16/07 25 mph 24-33 m h 82; 15;3 33 mph 22-39 m h Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Width (ft.): 40'-60' No. of Lanes (Both Directions): 2 ( 1 each way)) Average Daily Traffic: 2,900 Date Taken: 4/17-19/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): straiqht moderate upward slope Kohnen to Antone; median from Kohnen to Gleason; on-street parkinq; school on west side osted 25 m h school zone Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 1 ('04 = 0, '05 =1 , '06 = 0) Number of Speed Related Accidents (Total and Each Year): 0 Calculated Accident Rate: 1.12 acc.lm.v.m. Statewide Average Rate: 2.03 Recommendations: The survey data, includinq the proximity of the school. indicate that maintaininq the 25 mph speed limit is appropriate. ANTONE WY. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 APproveo/~/..u.... y--y- ~ Date: I . {/ Approved Speed Limit: 25 mph Per eve 40803, Survey Expires: 3/16/2014 SADDL.EBROOK CASTLETON :~ : z' · O~ : t: : : <(' I 0:: KOHNEN ~ el, MADDEN .' GLEASON DR. . N Street: N. Dublin Ranch Drive Limits: btwn. Tassaiara Rd. & Antone Wv. Length (feet): 2,800' Location of Survey: Tassajara to Round Hill Dr. 3/21/07 25 m h 27-36 m h 75; 15; 10 36 mph Oak Bluff Ln. to Antone W . 3/19/07 *25 m h 21-30 87;6;7 28 m h 18-34 m h Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Width (ft.): 40'-64' No. of Lanes (Both Directions): 2 ( 1 each way)) Average Daily Traffic: 1.981 . Date Taken: 4/17-19/07. Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): upward slope Tassaiara to Round Hill; curved from Round Hill to Antone; on-street parkinq; direct residential access' communi ark east side Oak Bluff to Antone' *school zone near Antone W . Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 2 ('04 = 1, '05 = O. '06 = 1) Number of Speed Related Accidents (Total and Each Year): 0 Calculated Accident Rate: 1.74 acc.lm.v.m. Statewide Average Rate: 2.03 Recommendations: The measured critical speed and survey data indicate that maintaininq the 25 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 'Approved By: rr 9'b.:t~ c.y/,~ Date: 7/s-1ih17 ;p- , iF . Approved Speed Limit: 25 mph Per CVC 40803, Survey Expires: 3/19/2014 .. N Street: S. Dublin Ranch Drive Limits: btwn. Tassaiara Rd. & Antone Wy. Length (feet): 1 ,700' Location of Survey: Woodshire to Antone W . 3/29/07 *25 mph 27-36 mph 65;6;29 34.6 mph Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds *also school zone 25 m Width (ft.): 42'-66' No. of Lanes (Both Directions): 2 ( 1 each way)) Average Daily Traffic: 2.221 Date Taken: 4/17-19/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): upward slope Tassaiara to Woodshire; curved from Woodshire to Antone: some on-street parkinq; direct residential access' *school zone from Woodshire to Antone W . Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 3 ('04:::: 1 , '05:::: 2. '06:::: 0) Number of Speed Related Accidents (Total and Each Year): 0 Calculated Accident Rate: 3.85 acc.lm.v.m. Statewide Average Rate: 2.03 Recommendations: The measured critical speed and survey data, includinq presence of a school zone and pedestrian crossino indicate that the existino 25 mph speed limit should be maintained. ci c:: OAK BLUfF LN Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 APprove~a ~ h~.I;t r )';I~ Date: 7- / Approved Speed Limit: 25 mph Per evc 40803, Survey Expires: 3/29/2014 ANTONE W'f. + N Street: Scarlett Drive Limits: btwn. Dublin Blvd. & Scarlett Ct. Length (feet): 1 ,230' Location of Survey: Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Northbound 3/23,26/07 35 m h 26-35 mph 69; 13; 18 34.6 mph 16-47 m h Southbound 3/23,26/07 35 m h 27 -36 mph 73; 15; 12 36 mph 20-44 m h Width (ft.): 26'-28' No. of Lanes (Both Directions): 4 ( 2 each way)) Average Daily Traffic: 1 ,695 Date Taken: 4/24-26/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): separate one- way streets; straiqht; flat; no street parkinq; limited side access Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 6 ('04 = 0, '05 = 2, '06 = 4) Number of Speed Related Accidents (Total and Each Year): 2 ('04 = 0, '05 = 1. '06 = 1) Calculated Accident Rate: 14.01 acc.lm.v.m.* Statewide Average Rate: 2.20 *Includes intersection aces. at ends of segment but not the cross street volumes, resulting in higher rate. There were 3 accidents 2 seed related between the intersections at each end of the anal zed se ment. Recommendations: The measured critical speed and survey data indicate that maintaininq the 35 mph speed limit is appropriate. DUBUN BLVD. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 ~ APProV~~Y~-"1 'r/ ~ . Date: J ~ . Approved Speed Limit: 35 mph Per CVC 40803, Survey Expires: 3/23/2014 .. N Street: Siqnal Hill Drive Limits: btwn. Fallon Rd. & E. Suqar Hill Terrace Length (feet): 2,600' Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Fallon Rd. to E. Co hill Terr. 3/19,25/07 25 mph 25-34 m h 82; 10;8 32.9 mph 17-43 mph E. Coghill to E. Su ar Hill 3/25,30/07 25 mph 21-30 mph 83; 12;5 29.5 m h 19-37 m h Width (ft.): 40'-68' No. of Lanes (Both Directions): 2 ( 1 each way)) Average Daily Traffic:? Date Taken: ? Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): moderate curve and upward qrade Fallon to E. Coqhill; downward qrade E. Coqhill to E. Suqar Hill: street arkin . clubhouse on west side btwn. Fallon & E. Co hill' direct residential access elsewhere Accident Period Analyzed: 2004 - 2006 Number of Accidents (List Total and Each Year): 1 ('04 = 0, '05 = 1 , '06 = 0) Number of Speed Related Accidents (Total and Each Year): 0 Calculated Accident Rate: ? Statewide Average Rate: 2.03 Recommendations: The measured critical speed and survey data indicate that maintaininq the 25 mph speed limit is appropriate. In order to clarify the speed limit it is recommended that 25 mph speed limit siqns be installed (one near Fallon Rd. and one near E. Suqar Hill Tr.). Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 APProV~d }ly:~A~AA '7'Y' hfA.,u Date: ~ ' Approved Speed Limit 25 mph Per evc 40803, Survey Expires: 3/19/2014 .. N' Street: Villaqe Pkwy. Limits: btwn. City Limit and Amador Valley Blvd. Length (feet): 6,100' Location of SUNey: City Limit to Davona to Brighton to Tamarack to Davona Dr. Bri hton Dr. Tamarack Rd. Amador Valle Date Taken: 2/26/07 2/26/07 2/26/07 2/27/07 Posted Speed: 35 m h *35 mph 35m h 35 m h Pace Speed: 32-41 m h 31-40 m h 32-41 m h 31-40 m h % in Pace, Above, Below 86;9;5 85;9;6 80; 14;6 85;8;7 Critical Speed (85%) 40.1 mph 39 mph 40.8 mph 38.5 mph Range of Speeds 23-46 m h 26-46 mph 29-50 m h 22-47 m h , Width (ft.): 83'-85' No. of Lanes (Both Directions): 4 ( 2 each way)) Average Daily Traffic: 11 ,392-16,119 Date Taken: 4/17-19/07 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): no parkinq; hiqh school east side between Davona and Briqhton (*25 mph school zone); retail near Amador Valle Blvd. Accident Period Analyzed: 2004 - 2006 (City Limit - Clark Ave.) Number of Accidents (List Total and Each Year): 50 ('04 = 16, '05 = 16, '06 = 18) Number of Speed Related Accidents (Total and Each Year): 15 ('04 = 3, '05 = 4, '06 = 8) Calculated Accident Rate: ? Statewide Average Rate: ? Recommendations: The measured critical speed and survey data indicate that maintaininq the 35 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 . r$i::2 ~~f;OVW~~h~~}//~ Approved Speed Limit: 35 mph Per CVC 40803, Survey Expires: 2/26/2014 of N Street: ViIlaqe Pkwy. Limits: btwn. Amador Valley BI. & Dublin Blvd. Length (feet): 1.700' Location of Survey: Amador Valley to Dublin Blvd. 2/27/07 30m h 27-36 m h 85; 10; 5 35.4 mph 23-43 mph Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds retail Accident Period Analyzed: 2004 - 2006 (City Limit - Clark Ave.) Number of Accidents (List Total and Each Year): 50 ('04 = 16. '05 = 16. '06 = 18) Number of Speed Related Accidents (Total and Each Year): 15 ('04 = 3. '05 = 4. '06 = 8) Calculated Accident Rate: ? Statewide Average Rate: 2.20 Recommendations: The measured critical speed and survey data indicate that maintaininq the 30 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 APprove~:Uol'/-<~""''17}. Ai#X) Date: h I. / Approved Speed Limit: 30 mph Per evc 40803, Survey Expires: 2/27/2014 .. N l) Street: Villaqe Pkwy. Limits: btwn. Dublin Blvd. & Clark Ave. Length (feet): 950' Location of Survey: Date Taken: Posted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Dublin Blvd. to Clark Ave. 3/1/07 30 m h 22-31 mph 94;3; 3 29.1 mph 20-37 m h Width (ft.): 44' No. of Lanes (Both Directions): 2 ( 1 each way)) Average Daily Traffic:-1. Date Taken: ? Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): street parkinq; retail access near Dublin Blvd. office access south' 1-680 northbound onram west side Accident Period Analyzed: 2004 - 2006 (Citv Limit - Clark Ave.) Number of Accidents (List Total and Each Year): 50 ('04 = 16, '05 = 16, '06 = 18) Number of Speed Related Accidents (Total and Each Year): 15 ('04 =3, '05 = 4, '06 = 8) Calculated Accident Rate: ? Statewide Average Rate: ? Recommendations: The measured critical speed and survey data indicate that maintaininq the 30 mph speed limit is appropriate. Study Prepared By: Omni-Means Enqineers & Planners Date: 4/07 APprove~ fl: ~h~ T 'ft~ Date:t Z 7 v Approved Speed Limit: 30 mph Per CVC 40803, Survey Expires: 3/1/2014 OUB\JN .. N W AIS Document Retrieval Page 1 of2 40802. (a) A "speed trap" is either of the following: (1) A particular section of a highway measured as to distance and with boundaries marked, designated, or otherwise determined in order that the speed of a vehicle may be calculated by securing the time it takes the vehicle to travel the known distance. (2) A particular section of a highway with a prima facie speed limit that is provided by this code or by local ordinance under subparagraph (A) of paragraph (2) of subdivision (a) of Section 22352, or established under Section 22354, 22357, 22358, or 22358.3, if that prima facie speed limit is not justified by an engineering and traffic survey conducted within five years prior to the date of the alleged violation, and enforcement of the speed limit involves the use of radar or any other electronic device that measures the speed of moving objects. This paragraph does not apply to a local street, road, or school zone. (b) (1) For purposes of this section, a local street or road is defined by the latest functional usage and federal-aid system maps submitted to the federal Highway Administration, except that when these maps have not been submitted, or when the street or road is not shown on the maps, a "local street or road" means a street or road that primarily provides access to abutting residential property and meets the following three conditions: (A) Roadway width of not more than 40 feet. (B) Not more than one-half of a mile of uninterrupted length. Interruptions shall include official traffic control signals as defined in Section 445. (C) Not more than one traffic lane in each direction. (2) For purposes of this section "school zone" means that area approaching or passing a school building or the grounds thereof that is contiguous to a highway and on which is posted a standard "SCHOOL" warning sign, while children are going to or leaving the school either during school hours or during the noon recess period. "School zone" also includes the area approaching or passing any school grounds that are not separated from the highway by a fence, gate, or other physical barrier while the grounds are in use by children if that highway is posted with a standard "SCHOOL" warning sign. (c) (1) When all of the following criteria are met, paragraph (2) of this subdivision shall be applicable and subdivision (a) shall not be applicable: (A) When radar is used, the arresting officer has successfully completed a radar operator course of not less than 24 hours on the use of police traffic radar, and the course was approved and certified by the Commission on Peace Officer Standards and Training. 4erObSD (B) When laser or any other electronic device is used to measure the speed of moving objects, the arresting officer has successfully completed the training required in subparagraph (A) and an additional training course of not less than two hours approved and certified by the Commission on Peace Officer Standards and Training. (C) (i) The prosecution proved that the arresting officer complied with subparagraphs (A) and (B) and that an engineering and traffic survey has been conducted in accordance with subparagraph (B) of paragraph (2). The prosecution proved that, prior to the officer issuing the notice to appear, the arresting officer established that the radar, laser, or other electronic device conformed to the requirements of subparagraph (D). (ii) The prosecution proved the speed of the accused was unsafe for the conditions present at the time of alleged violation unless the citation was for a violation of Section 22349, 22356, or 22406. (D) The radar, laser, or other electronic device used to measure http://leginfo.public.ca.gov/cgi-bin/waisgate?W AISdocID=58969024664-t A TT A elllEIT -3 W AIS Document Retrieval Page 2 of2 the speed of the accused meets or exceeds the minimal operational standards of the National Traffic Highway Safety Administration, and has been calibrated within the three years prior to the 4ate of the alleged violation by an independent certified laser or radar repair and testing or calibration facility. (2) A "speed trap" is either of the following: (A) A particular section of a highway measured as to distance and with boundaries marked, designated, or otherwise determined in order that the speed of a v.h1cle may be calculated by securing the time it takes the vehicle to travel the known distance. (B) (i) A particular section of a highway or state highway with a prima facie speed limit that is provided by this code or by local ordinance under subparagraph (A) of paragraph (2) of subdivision (a) of Section 22352, or established under Section 22354, 22357, 22358, or 22358.3, if that prima facie speed limit is not justified by an engineering and traffic survey conducted within one of the following time periods, prior to the date of the alleged violation, and enforcement of the speed limit involves the use of radar or any other electronic device that measures the speed of moving objects: (I) Except as specified in subclause (II), seven years. (II) If an engineering and traffic survey was conducted more than seven years prior to the date of the alleged violation, and a registered engineer evaluates the section of the highway and determines that no significant changes in roadway or traffic conditions have occurred, including, but not limited to, changes in adjoining property or land use, roadway width, or traffic volume, 10 years. (ii) This subparagraph does not apply to a local street, road, or school zone. 5D6b 6() http://leginfo.public.ca.gov/cgi-bin/waisgate?W AISdocID=58969024664+ 1 +O+O&W AISact... 8/8/2007