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HomeMy WebLinkAbout6.3 Dougherty Rd Speed LimitG~~~ OF Dp~~~ ~///~~ ~\ `~ ~ ////l 04LIFOR~~~ STAFF REPORT CITY CLERK DUBLIN CITY COUNCIL File # ^0®®-©D^ DATE: December 15, 2009 TO: Honorable Mayor and City Councilmembers FROM: Joni Pattillo, City Manager SUBJE Public Hearing: Review of Engineering Survey Results and Establishment of Speed Limit for Dougherty Road Prepared By: Jaimee Bourgeois, Senior Civil Engineer (Traffic) EXECUTIVE SUMMARY: This is the first reading of a proposed ordinance which would establish a new speed limit of 40 mph on Dougherty Road between Scarlett Drive/Park Sierra and Dublin Boulevard, since an updated engineering and traffic survey supports a speed limit other than what is currently posted. FINANCIAL IMPACT: The cost to replace existing speed limit signs and pavement legends is approximately $800. This can be covered by the Street Maintenance Operating Budget. RECOMMENDATION: Staff recommends that the City Council conduct a public hearing, deliberate, waive the reading and introduce the ordinance establishing a new speed limit on Dougherty Road. ~i ~. Submitted By Revi By Public Works Director Assistant City Manager Page 1 of 3 ITEM NO. ' • ~y DESCRIPTION: The California Vehicle Code provides that police may use radar for speed enforcement as long as certain criteria are met. For roadways that are defined as local roads on the federal roadway classification map or, if not shown on that map, roads 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 (E&TS) is required to establish a speed limit that can be enforced 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. Speed limits are to be set at the nearest 5 mph increment to the 85th percentile speed. 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 residential density, pedestrian and bicycle features, intersecting driveways, accident history, schools, and so forth, which would cause the recommended speed limit to be reduced by 5 mph. 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 (such as a lane closure or inclement weather) that would affect a driver's speed. A Policy Directive was issued by the State of California Department of Transportation in July 2009 that reiterates the standard for establishing speed limits as set forth in the California Vehicle Code (Sections 627, 22358.8 and 40802). Traffic Commissioners take these engineering and traffic surveys seriously and may not uphold citations when the driver is within the 85th percentile speed. Speed limits that are set artificially low are said to be "speed traps" and are typically not enforceable (Attachment 1). There were 34 roadway segments Citywide that were due to be re-evaluated because the existing E&TS was due to expire; therefore, an E&TS was recently completed for each of these roadway segments. The result for Dougherty Road between Scarlett Drive/Park Sierra and Dublin Boulevard is being brought before the City Council because the results do not support the existing posted speed limit, as described below. Dougherty Road (Scarlett Drive/Park Sierra to Dublin Boulevard): The existing posted speed limit is 35 mph. The adjacent land uses are generally commercial with several driveways located on both sides of the roadway. There exist residential uses at the north end of this roadway segment. The roadway segment varies between six lanes at the southern end and four lanes at the northern end. There is a two-way left-turn lane (TWLTL) north of Sierra Lane. The E&TS indicates that the critical speed is 44 mph. This suggests a posted speed limit of 45 mph. Due to the high density of commercial driveways and the existence of a TWLTL with the potential for head-on collisions, a 5 mph reduction to 40 mph is justifiable. Staff recommends that the posted speed limit be established at 40 mph so that enforcement by use of radar may continue. A draft ordinance is attached (Attachment 3) that would amend the City of Dublin Traffic Code to establish a new speed limit of 40 mph on Dougherty Road between Scarlett Drive/Park Sierra and Dublin Boulevard. Page 2 of 3 NOTICING REQUIREMENTS/PUBLIC OUTREACH: A notice about the public hearing was mailed to residents and businesses fronting the roadway segment under discussion (Attachments 4 and 5). ATTACHMENTS: 1. California Vehicle Code Section 40802 "Speed Trap" 2. Engineering and Traffic Survey Form Results 3. Draft Ordinance 4. Notice of Public Hearing 5. Mailing List for Notice of Public Hearing Page 3 of 3 V.C. Section 40802 -Speed Traps i~-~a Home Paae » Publications » Vehicle Code Title Paae » Vehicle Code Table of Contents » Division 17, Chapter 3. Article 1 » Section 40802 Speed Traps 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. (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 presen ~(~(~' ~O r ~j is (i~j I unless the citation was for a violation of Section 22349, 22356, or 22406. ~~~~~ , - /nubs/vcton/d 17/vc40802.htm V.C. Section 40802 -Speed Traps ~ I (D) The radar, laser, or other electronic device used to measure the speed of the accused meets or exceeds the niinima~ operational standards of the National Traffic Highway Safety Administration, and has been calibrated within the three years prior to the date 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 vehicle 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. Added Sec. 2, Ch. 315, Stats. 1995. Effective January 1, 1996. Operative January 1, 1999. Amended Sec. 2, Ch. 104, Stats. 1996. Effective January 1, 1997. Amended Sec. 1, Ch. 1037, Stats. 1998. Effective January 1, 1999. Amended Sec. 18, Ch. 1008, Stats. 1999. Effective January 1, 2000. Amended Sec. 3, Ch. 521, Stats. 2000. Effective January 1, 2001. Conditions of Use ~ Privacy Policy Copyright ©2009 State of California Acrobat Reader enables you to view and print PDF files. To incorporate the latest accessibility features download of the latest version of Acrobat Reader may be required. http://dmv.ca.gov/pubs/vctop/d17/vc40802.htm 12/7/2009 3~-~~ City of Dublin Engineering and Traffic Survey Street: Dougherty Road Limits: Park Sierra to Dublin Boulevard "~~~# ~" Direction: NB/SB "~ ~/f, Factors A. Prevailing Speed Data Date /Location of Survey 10/ 16/2009, Between Park Sierra and Dublin Boulevard Posted Speed Limit 35 mph - "-a -~ # Speed Data Collected 201 - 85th Percentile 44 mph '~~ 10 mph Pace 36-45 , Percent in Pace '. Y S ,~ 85% B. Traffic Factors s NeY ~, Average Daily Traffic (vehicles per day) 28,559 vpd ~ ~~ ~ ~~~ ~"'~'.o,„ Length of Segment (mile) 0.41 mi ~~rsxistc+a~ ts~ Street Classification Arterial ~~, C. Collision History - Date Range Covered 0 I /0 I /2006 - 12/3 I /2008 Total Accidents 15 Accident Rate (Accident/Mill. Veh. Miles) 0.5 Acc/MVM , Statewide Average Accident Rate I J8 Acc/MVM , «~'`~` f~~ ~, ~. D. Roadway Conditions Adjacent Land Use This area is generally commercial with numerous driveways along Dougherty Road. These driveways can cause through traffic to suddenly slow or stop when being accessed. Roadway Geometrics 5-lane roadway with atwo-way left-turn lane (TWLTL). Comments 5 mph downward speed zoning due to excessive number of commercial driveways and TWLTL with potential for head-on collisions. Speed Limit Change? Yes Existing Speed Limit: 35 mph Recommended Speed Limit: 40 mph This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 26.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic. Per California Vehicle Code 40803, survey expires 10/ 16/2016 Approved and Authorized for release by the City of Dublin Public Works: Signed Title ~~*~ AiiAi~lf Z- Spot Speed Study Prepared by: National Data & Surveying Services City of Dublin ~I ~- ~a Time of Survey: 14:30 - 15:00 Street Width: 94 Pt ,DATE: 10(15;y009 Location: Dougherty Rd between ParR Sierra and Dublin Blvd DAY: Thursday Posted Speed: 40 MPH Project #: 09-7414-017 rthbond Southbound Spot Speeds Speed mph pLL Vehicles. 11 0 12 0 12 13 0 4 14 0 1 15 `U 16 17 0 18 0 18 19 0 20 0 20 21 0 22 0 22 23 0 24 0 24 25 0 26 p 26 27 0 28 0 28 29 0 30 0 30 31 0 32 1 32 --_- _. . 34 2 : 34 ~ __ _.. 35 11 i - - - 36 9 = 36 I _ ~ -- -- --- 38 27 38 ~ -- ~ - ' 40 18 a 40 ---- -- - ... .. 41 19 N . 1 - I 42 16 Q- 42 ~ -- - _.. -_ ___._. L -- _ ..._._. 44 12 44 - I 45 13 - - - --- ---.. l 46 5 46 -- -.._ __ ----- 47 6 --- 48 2 48 , , 49 0 50 1 50 ,,, ; 51 0 52 2 52 53 0 54 0 54 55 0 56 0 56 57 0 58 0 58 59 0 60 0 60 61 0 62 0 62 63 0 64 0 64 65 0 66 0 66 67 0 68 0 68 69 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Number of Vehicles SPEED PARAMETERS Class Count Ran a 50th Percentile 85th Percentile 10 MPH Pace # in Pace Percent in Pace % / # Below Pace % / # Above Pace ALL 201 11 - 69 40 mph 44 mph 36 - 45 170 85 % 7% / 15 6 % / 16 s ~- i a ORDINANCE NO. -09 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF DUBLIN AMENDING THE DUBLIN TRAFFIC CODE TO ESTABLISH A NEW SPEED LIMIT ON CERTAIN PORTIONS OF DOUGHERTY ROAD (SCARLETT DRIVE/PARK SIERRA TO DUBLIN BOULEVARD) The City Council of the City of Dublin does hereby ordain as follows: Section 1: The following language shall be deleted from Section 6.60.030 (35 miles per hour) of the City of Dublin Traffic Code: "Dougherty Road: Park Sierra to Southern City Limit" Section 2: The following language shall be added to Section 6.60.040 (40 miles per hour) of the City of Dublin Traffic Code: "Dougherty Road: Scarlett Drive/Park Sierra to Dublin Boulevard " Section 3. Severability. The provisions of this Ordinance are severable and if any provision, clause, sentence, word or part thereof is held illegal, invalid, unconstitutional, or inapplicable to any person or circumstances, such illegality, invalidity, unconstitutionality, or inapplicability shall not affect or impair any of the remaining provisions, clauses, sentences, sections, words or parts thereof of the ordinance or their applicability to other persons or circumstances. Section 4. Effective Date. This Ordinance shall take effect and be enforced thirty (30) days following its adoption. Section 5. Posting. 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. ~„ . AIIAL^YB1f ~ ~~~a PASSED, APPROVED AND ADOPTED this 15th day of December, 2009. AYES: NOES: ABSENT: ABSTAIN: ATTEST: Mayor City Clerk G:ITRANSPORTATIONILocal TrafficlSpeed Limrtslordrnance_speed limits_121509.doc Page 2 ~ ~ is CITY OF DUBLIN Public Works Department City Offices, 100 Civic Plaza, Dublin California 94568 PUBLIC HEARING NOTICE The City of Dublin is writing to inform you that we will be holding a public hearing that might be of interest to you. The City Council will be considering a change to the posted speed limit on Dougherty Road based on the results of a recently completed Engineering & Traffic Survey. The California Vehicle Code provides very specific direction on how speed limits are legally established. In order for Police Services to enforce a posted speed limit using radar, the posted speed limit must be established following these specific rules and is based on actual speed surveys conducted on the roadway. Because these surveys expire every 10 years, periodic re- evaluation occurs. City of Dublin staff has completed a new survey for Dougherty Road between Scarlett Drive/Park Sierra and Dublin Boulevard. This posted speed limit on this roadway segment is currently 35 mph. The results of the survey support an increase of the posted speed limit to 40 mph. The public hearing will take place on Tuesday, December 15, 2009, starting at 7:00 p.m. in the City Council Chambers at 100 Civic Plaza in Dublin. Members of the public are encouraged to attend and participate in the public hearing. Comments may also be submitted in writing by close of business day on Monday, December 14, 2009, to: Jaimee Bourgeois, City Traffic Engineer City of Dublin Public Works Department 100 Civic Plaza Dublin, Ca 94568 Should you have any questions in advance of the meeting, please contact Jaimee Bourgeois at (925) 833-6630. G:\TRANSPORTATION\Local Traffic\Speed Limits\notice_speed limits_121509.doc Parks RFTA Resident Bldg 790, Fifth Street 6526 Sierra Lane Dublin CA 94568 Dublin CA 94568 Resident Resident 6530 Sierra Lane 6542 Sierra Lane Dublin CA 94568 Dublin CA 94568 Resident Resident 6554 Sierra Lane 6558 Sierra Lane Dublin CA 94568 Dublin CA 94568 Resident Resident 6566 Sierra Lane 6549 Bantry Bay Street Dublin CA 9456$ Dublin CA 94568 Resident Resident 6379 Sussex Court 6385 Sussex Court Dublin CA 94568 Dublin CA 94568 Resident Resident 6396 Sussex Court 6374 Sussex Court Dublin CA 94568 Dublin CA 94568 Resident Resident 6386 Sussex Court 6392 Sussex Court Dublin CA 94568 Dublin CA 94568 Resident Resident 6337 Gatwick Court 6343 Gatwick Court Dublin CA 94568 Dublin CA 94568 Resident Resident 6355 Gatwick Court 6361 Gatwick Court Dublin CA 94568 Dublin CA 94568 Resident Resident 6338 Gatwick Court 6344 Gatwick Court Dublin CA 94568 Dublin CA 94568 ~ ~~- ,~ Resident 6373 Sussex Court Dublin CA 94568 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Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Resident Resident Park Sierra Apartments 6107 Moore Place 6101 Moore Place 6450 Dougherty Road Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6270 Houston Place 6302 Houston Place 6310 Houston Place Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6250 Sierra Lane 5947 Sierra Lane 6487 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6483 Sierra Lane 6475 Sierra Lane 6477 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6479 Sierra Lane 6481 Sierra Lane 6473 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6471 Sierra Lane 6469 Sierra Lane 6467 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6465 Sierra Lane 6457 Sierra Lane 6451 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 i ~{= i ~ Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6449 Sierra Lane 6445 Sierra Lane 6435 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6433 Sierra Lane 6429 Sierra Lane 6427 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6525 Sierra Lane 6521 Sierra Lane 6517 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6515 Sierra Lane 6511 Sierra Lane 6507 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6509 Sierra Lane 6503 Sierra Lane 6501 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6499 Sierra Lane 6497 Sierra Lane 6495 Sierra Lane Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6593 Sierra Lane 6491 Sierra Lane 6289 Dougherty Road Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6253 Dougherty Road 6161 Dougherty Road 6100 Dougherty Road Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Iron Horse Trail Apts. Business Owner/Occupant Business Owner/Occupant 6233 Dougherty Road 6032 Dougherty Road 6036 Dougherty Road Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant Business Owner/Occupant 6028 Dougherty Road 6050 Dougherty Road 6056 Dougherty Road Dublin CA 94568 Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant 6491 Dougherty Road Dublin CA 94568 Business Owner/Occupant 6045 Dougherty Road Dublin CA 94568 Business Owner/Occupant 6117 Dougherty Road Dublin CA 94568 Business Owner/Occupant 5965 Dougherty Road Dublin CA 94568 Business Owner/Occupant 6048 Dougherty Road Dublin CA 94568 Business Owner/Occupant 6040 Dougherty Road Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant 6008 Dougherty Road 6000 Dougherty Road Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant 6033 Dougherty Road 6117 Dougherty Road Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant 6053 Dougherty Road 6055 Dougherty Road Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant 6058 Dougherty Road 6052 Dougherty Road Dublin CA 94568 Dublin CA 94568 Business Owner/Occupant Business Owner/Occupant 6046 Dougherty Road 6044 Dougherty Road Dublin CA 94568 Dublin CA 94568