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HomeMy WebLinkAbout6.2 Speed Limit Tassaj Rd CITY CLERK File # AGENDA STATEMENT CITY COUNCIL MEETING DATE: November 18, 2003 SUBJECT: Public Hearing: Establishment of Speed Limits on Tassajara Road, Glyrmis Rose Drive, and Amador Plaza Road South of Dublin Boulevard Report Prepared by: :Lee S. Thompson; Public Works' Director ATTACHMENTS: 1) 2) 3) 4) s) Draft Ordinance Map of Recent Survey Locations Engineering Survey Forms California Vehicle Code (CVC) Speed Trap Section and definition of Engineering and Traffic Survey A copy of the full engineering survey report will be available for review at the City Council meeting. RECOMMENDATION: 1) :) ~) Open public hearing Receive Staff presentation and public comment Question Staff and the public Close public hearing and deliberate Waive reading and introduce ordinance establishing speed limits on Tassajara Road, Glynnis Rose Drive, and Amador Plaza Road South of Dublin Boulevard FINANCIAL STATEMENT: Sufficient funds are budgeted in the Street Maintenance Operating Budget to install speed limit signage. DESCRIPTION: If radar is to be used for traffic enforcement, the California Vehicle Code (CVC) requires that a local jurisdiction conduct an engineering and traffic survey (''speed survey") prior to establishing speed limits on streets which meet criteria outlined in CVC Section 40802 (Attachment 4). Under this section, surveys are needed for all streets except those which have residential frontage and. are no more than 40 feet wide, have no more than one half mile of uninterrupted length, and have no more than one lane in each direction. The surveys must then be renewed at seven-year intervals or when the character of the street changes due to cOnstruction or other factors that could influence prevailing speeds. Engineering surveys were recently updated on 11 streets (see Map, Attachment 2). New speed limits are now proposed to be established for Tassajara Road, Glynnis Rose Drive, and Amador Plaza Road south of Dublin Boulevard. No other speed limits are proposed to be changed at this time. COPIES TO: ITEM NO. ~ g:~agenmisc\tassajara speed limit The basis for the engineering and traffic surveys is the 85t~ percentile (critical) speed, which is the speed at or below'which 85% of the vehicles are traveling. The 85t~ percentile speed is generally accepted as a "safe" speed; however, the survey is also required to consider factors such as accident history and roadway characteristics such as curves, driveways, or parking (see Survey Forms, Attachment 3). Tassajara Road Until recently, Staff has been unable to conduct surveys on Tassajara Road due to ongoing construction. However, all existing traffic signals have now been energized, and the roadway construction is complete for the foreseeable future. Radar speed surveys were conducted on Tassajara Road on September 9 and 10 and November 4, 2003. The 85t~ percentile (critical) speed between 1-580 and Dublin Boulevard was 39.7 mph, which supports a 35 mph speed limit. The 85th percentile speed between Dublin Boulevard and Gleason Drive was 44.5 mph, between Gleason Drive and North Dublin Ranch Drive, 47 mph, and between North Dublin Ranch Drive and the northerly City Limit, 52 mph. These speeds support a 45 mph speed limit. Based on the factors considered in the survey, Staff'recommends that speed limits on Tassajara Road be established as follows: Segment from 1-580 to Dublin Boulevard: Segments from Dublin Boulevard to northerly City Limit: 35 miles per hour 45 miles per hour The.only speed limit signs currently posted on Tassajara Road are a 35 mph sign on the 1-580 overcrossing and a 45 mph sign posted on the rural two-lane portion north of North Dublin Ranch Drive. The appropriate speed limit signs are proposed to be posted on all segments as soon as the ordinance becomes effective. Glynnis Rose Drive Construction on Glynnis Rose Drive is now complete. The roadway serves a rear entrance to the Waterford shopping center and provides access to both the Waterford Apartments and the Dublin Greene residential development. Parking is allowed on both sides of the street and is used by residents of the apartments and the adjacent houses. Radar speed surveys were conducted on Glynnis Rose Drive on September 23, 2003. The 85t~ percentile (critical) speed was 31.5 mph. Based on the survey results, the surrounding uses, and the incidence of pedestrians, Staff'recommends establishing a speed limit of 25 mph. No speed limit signs are currently installed but would be installed as soon as the ordinance becomes effective. Amador Plaza Road (South of Dublin Boulevard) A 30 mph speed limit on all of Amador Plaza Road was pre-existing and was formally adopted by the City during the 1987 Code update. Engineering surveys conducted prior to the 1-580 / 1-680 interchange construction supported the 30 mph speed limit. A survey update conducted in 1999 recommended a "Construction 25" speed limit pending completion of the improvements. There are currently no posted speed limit signs. The character of the southerly segment of Amador Plaza Road has changed considerably due to the construction of St. Patrick Way and the 1-680 ramps, as well as the addition of businesses on the east side of the street. A radar speed survey was conducted on September 18, 2003. The 85~ percentile (critical) speed was found to be 26.8 mph. Based on the critical speed and the multiple business driveways, Page 2 as well as the occasional vehicle queues from the freeway ramps, Staff recommends that the speed limit for Amador Plaza Road south of Dublin Boulevard be set at 25 miles per hour. The City's Municipal Code requires that speed limits be adopted by ordinance. Staff recommends that the City Council conduct a public hearing, deliberate, and introduce the ordinance establishing speed limits on Tassajara Road, Glynnis Rose Drive, and Amador Plaza Road south of Dublin Boulevard. ORDINANCE NO. -O3 AN ORDINANCE OF THE CITY OF DUBLIN ESTABLISHING SPEED LIMITS ON TASSAJARA ROAD, GLYNNIS ROSE DRIVE, AND AMADOR PLAZA ROAD SOUTH OF DUBLIN BOULEVARD 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: Tassajara Road: Glynnis Rose Drive Amador Plaza Road: From southerly City Limit to Dublin Boulevara~ 35 miles per hour. From Dublin Boulevard to northerly City Limit, 45 miles per hour. Entire Street, 25 miles per hour From Dublin Boulevard to southerly end, 25 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), 6.60.030 (35 miles per hour), and 6.60.050 (45 miles per hour). Section 3: Section 6.60.020 (30 miles per hour) of the City of Dublin Traffic Code shall be amended to read: Amador Plaza Road: From Dublin Boulevard to Amador Valley Boulevard. Section 4: 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 day of ,2003. AYES: NOES: ABSENT: ABSTAIN: ATTEST: Mayor City Clerk g: ktgenmisc lordinance speed limit tassajara N. LAKE DF S. LAKE DR. Proposed speed limit changes are indicated for street segments on Tassajara Road, on Glynnis Rose Drive and on Amador Plaza Road South of Dublin Boulevard. Existing speed limits are appropriate on other streets surveyed, and no other speed limit changes are proposed at this time. GLEASON DR. CENTRAL PKWY. MANZANITA f LN. DUBLIN BLVD. KOLL CENTER DUBLIN CIRCLE WY. Street Segments Surveyed For 2003 Speed Limit Traffic Engineering Study ~ (Highlighted BY ~. Symbol) No~h , omeans figure 2 Street: Tassaiara Road Limits: 1-580 to Dublin Blvd. Length. (feet): 1,513' L0.Cati0~ Of Survey: Date Taken: Posted Speed: Pace Speed: % in pace, Above, Below Critical Speed (85%) Range of Si~eeds K011 Center 9/9/03 ' none 29.- 38 mph 69%, 22%, 9% ' 3.9.7..~h . 23.'~'54 :~'ph" Width (ft.): 125'- 150' No. of Lanes (Both Directions)' 5 (3 SB,'2 NB) Average Daily Traffic: 30,972 Date Taken: 5/03 Special Conditions (Parking, Roadway Alignment, Land USe, School Area, etc.): No on-street parkin.q, separate turn lanes at interSections; Business park/office access on weSt side. A~id'b'~:t': Period A~iyZed L;'2.000:.~: 2o02 ..... Number of AcCidents (LiSt TOtal and Each year): 13'(2000 = 3,200'1 = 5, 2'00'2 = 5) Number of Speed Related Accidents (Total and Each Year): 1.. (2000 = 0, 2001 = 1, 2002 = 0) Calculated Accident Rate: 1.34 acc./m.v.m. Statewide Average Rate: 2.23 Recommendations: Based on the measured critical speed · and the adiacent office land use, a speed limit of 35 mph from I-5.8~'t0 DUblin Bivd. is approPriate. Study Prepared By: Omni-MearC~n.qs. & Planners Date:.. I0/03 ~ ApProved BY~ "'~ ,)~.~~~ - Date: ~ '¢,~_.J Approved Speed Limit: ~,~' Per CVC 40802 and 40803, Survey Expires: ~//~/ Roadway Map f Street: T'asSaiara Rd. Limits: Dublin BI. to Gleason Dr. Length '(feet)!' '2,750': LOCation'of Survey: Date T~ken:. Posted Speed: Pace Speed: % i!! Pace, AboVe. Below critical speed (8.5%) Range of Speeds "Cehtral pkWy'. 9/9/03' none 35 -, 44 mph 69%.,.18%~ 1:3%. 28.1~' 56" i~i'Ph .... .Width (fi,): 125'. · No. of Lanes (Both Directions): 5 (3 SB, 2 NB) ' . Average Daily Traffic: 14,500 Date Taken: 2/03 special Conditions (Parking, RoadWay Alignment, Land Use, School. Area, etc.): Landscaped median;.No on-st[eot parking; SOUth of Central Pk~. is 3 lanes SB; Retail and Ci~ Park on w~t .Side. Accident Period AnalYz~d'z 2080 - 2002 Number of Accidents (List Total and Each Year): ~ 1 (2000 = 2, 2001 = ~, 2002 = 3) ~umber of Speed- Related Accidents (Total and Each Year): 5 .(2000 = 1,200'1 = 2, 2002 = 2) Calculated'Accident Rate: 1.33 acc./m.v.m. Statewide Average Rate: 2.23 Recommendations: Based :on the measured critical speed and roadway desi.qn, a.sP~ed .limit. of 4'5 mph on t:his r°a'dwa¥ RoadWay se.qment s apPropriate. Study ~mpareO By: Omni-Mean~s. & ~lannors Date: I0~03 '¢~ Approved By: ('~ ~.- ~~ .............. Date: / ' '~ '~/~' Approved Speed Limit: Per CVC 40802 and 40803, Su~ey Expires: ~i~llo ,' " street: Tassajara Road Limits: GleaSon'Dr. to N, Dublin Ranch Dr; Length (fee(): . 2,613, L0~tiS'h ::of Survey: Date T~:kbm posted SPeed: PaCe Speed: % in Pa6e, AbOve, Below Criti~.a.. i:' :Speed (85%) Ran~;' b!'.SPeeds Width (~).~'..:: .:!.15:. No. of Lan~s (BOth Directions): 4,5. Average Daily Traffic: 14~500 Date Takem 2/03 Speci~;J Conditions (parking, ROadWaY'Alignment, Land Use, SChO61'Area, etc.): Landscaped median; NOon-street parking; Indirect access to .reSidential areas on both sideS. SilD:dblin RnCh. 9/i0/03 none ...... 38- 47 mph 7i'% 15%, 14% 47. ~'p:h' ' i..', .. . ' 30 ;.57."~p~.' . ~" cc~den't. Pe~od A~alyZed! 2000. ~ 2,002 Num'b'er' of ACCidents (List.Tota! a~d"E~Ch' Year): 11 (2000= 2,.2001 '4, 2:0.i22 = 5) Number of Speed Related Accidents (Total and Each Year): 3 (2000'= 0, 2001 = 1, 2002 = 2) Calculated Accident Rate: 1.40 acc./m.v.m. Statewide Average Rate: 2.23 . RecOmmendations' Based.. on the.measured critical speed and'roadway design, a speed limit· o~ 45 mph. on' this r0'adWay se~ m~t. is aPpi~o~iate. Study Prepared By: Omni-Mea~ En.qs. & Planners Date: 10103... ~ .~ .,.. Approved By: ~~ Date: · .¢_.~ "[ >-'[ o-_~. Approved Speed Limit: /--/~' ~ Per CVC 40802 and 40803, SUrvey Expires: Street: Tassaiara Rd. Limits: N. Dublin Ranch Dr. to City Limit Length (feet)' .2,200' Location of Survey: Date Taken: PoSted Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds Quarry School -. 45 mph 43 - 52 mph ,. 79%, 15%~ 6% 52 mph 36 - 61 mph Width (ft.):. 21' - 23' No. of Lanes (Both Directions): .2 (1 each way) Average Daily Traffic: 9,000 Date Taken: 2/03 Special.Conditions (Parking, Roadway Alignment,.Land Use, School Area, etc.): Rural hi.q~way with narrower lanes and older, somewhat bumpy surface; SchOol located midWay between N. Dublin Ranch Dr. and City Limit. Accident Period Analyzed: 2000 - 2002 Number of Accidents (List Total and, Each year): 5 (2000 = 1, 2001 = 3, 2002 = 1) Number of Speed Related Accidents (Total and Each Year): 2 (2000 = 0, 2001 = 1,2002 = 1) Calculated Accident Rate: 1.22 acc./m.v.m. Statewide Average Rate: 1.96 ReCommendations: Based on the measured critical speed, roadway desi.qn, and proximity of school, maintaininq a. Speed limit of 45 mph on this roadway segment is appropriate. Roadway Map I Study Prepared By: Omni-Means Eq~s. & Planners Date: 11/02 ~ # ~/ . ' Approved;By.: [ T~ ~ Approved Speed Limit: Per CVC 40802'and 40803, Survey Expires: Street: GIynniS Rose Drive Limits: Dublin Blvd. Length (feet): 1,375' to Central Pkwy. Location Of Su'rvey;. Date Taken; Posted Speed: Pace Speed: % in PaCe, Above, Below Critical speed (85%) Range Of Speed~ DUb. i.n~o. PkWy 9/23/03' · none' 23- 32 mPh 83%,13%,4% 31:;5.mph . ...... 18. ~ 37' ~'p.h.' Width (ft.): 5q' 10" No. of Lanes (Both Directions):. 2 Average Daily Traffic: 7,005 Date Takem 9/03 Special Conditions (Parldng, Roadway Alignment, Land Use, School Area, etc.): On-street parking allowed; ReSidential on west side;. Mixed-use residential/cOmmercial on east side; Two- way left. tU'!~n, lane;, pede.c;ti:ian 'tr~ffio'from abuttin.q resi'der~t'i~'l uSes. Acbide~'t' P~fi~d A'iial.yze¢~: 200.0. N~nhber of'AcCidents (List T0ta'i"afid' Ea'Ch Year): 1 (2000 ' i'i' 200i = 0, 2:002:= 0) Number of Speed Related Accidents (Total and Each Year): 0 (2000 = 0, 2001 = 0, 2002 = 0) Calculated ACcident Rate: .50 acc./m.v.m. Statewide AVerage Rate: 2.05 Recommendations: There are no posted.speed limit signs. The.measured critioal speed,..survey dat.a~ .and.abUttih.q resid'e'hti.a'l .useS'sUg.qe~t e§t~'bii~'hin.q a speed limit of 25 mph. (InStall signs.) Study Prepared By: Omni-Me~n.qs. & Planners Date: 10/03 ..-.¢-~.,, /./' ApProved BYe .... ~.~_.~ ~.m/,....¢,~ Date: · ~ ~'~J' u ~'~ [¢¢_~ Approved Speed Limit: Per CVC 40802 and 40803, Survey Expires: Roadway Map Street: Amador Plaza Road Limits: South of Dublin Blvd. Length (feet): 963' ~i~ ~-__~,f~,~;~i~ ~ ~ ~ ~4~ii~i~i ~i!,~,~ ~i~'" ~.~ ....................................... ~. · -'-~ .................. Lo~atiOn' 0f Survey: Date Taken: Posted. Speed: Pace Speed: % in Pace, Above, Below Critical Speed (85%) Range of Speeds DUb.!in.~St. Pat. 9i1'8/03 none. 18 - 27 mph 83%,i4% 3% 26:,8.m.i~h. 17'~: 37 'mph..~ Width (ft.): 68' 9" No. of Lanes (Both Directions): 4 (2 each way) Average Bally Traffic: 11,858 Date Taken: 2001 Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): No on-street parkin.q; Roadway curves; Retail area With parking lots and driveway access on each side; SOuth of St. Patrick Way is 1 lane eaCh way with 2WLTL. Accident Peridd. Analyzed: 20'00,2002 Number of Accidents (List Total and Each Year): 17 (2000 = 7, 2001 = 4, 2002 = 6) Number of Speed Related Accidents {Total and Each Year): 5 (2000 = 3, 2001 = 0, 2002 = 2)' Calculated Accident Rate: 7.19 acc./m.v.m. Statewide Average 'Rate: 3.43 Roadway Map I Re'bsi~mendations: Based on the critical speed and survey data¢ and due. to the rOadWay cUrva{ure, driveway access to abQttin~q ia'nd uSes, and recent accident history, it is recomm-ehded that a speed' limit of 25 mPh be established. Study Prepared By: Omni-M.,.Dans Engs. & Planners 'Date: 10/03 ApprOved By.'/', -"~~~'~ Date: - i/L¢~/ 0~__) Approved Speed Limit: Per CVC 40802 and 40803, Su~ey Expires' ~JlS/l¢ J~ 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~determine~ 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 f.ederal 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. 627. (a) "Engineering and traffic survey," as used in this code, means a survey of highway and traffic conditions in accordance with methods determined by the Department of Transportation for use by state and local authorities. (b) An engineering and traffic survey shall include, among other requirements deemed necessary by the department, consideration of all of the following: (1) Prevailing speeds as determined by traffic engineering measurements. (2) Accident records. (3) Highway, traffic, and roadside conditions not readily apparent to the driver. (c) When conducting an engineering and traffic survey, local authorities, in addition to the factors set forth in paragraphs (1) to (3), inclusive, of subdivision (b) may consider all of the following: (1) Residential density, if any of the following conditions exist on the particular portion of highway and the property contiguous thereto, other than a business district: (A) Upon one side of the highway, within a distance of a quarter of a mile, the contiguous property fronting thereon is occupied by 13 or more separate dwelling houses or business structures. (B) Upon both sides of the highway, collectively, within a distance of a quarter of a mile, the contiguous property fronting thereon is occupied by 16 or more separate dwelling houses or business structures. (C) The portion of highway is longer than one-quarter of a mile but has the ratio of separate dwelling houses or business structures to the length of the highway described in either subparagraph (A) or (B). (2) Pedestrian and bicyclist safety.