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Home My WebLink About4.2 Street Speed Limits or 19 82 STAFF REPORT CITY CLERK CITY COUNCIL File #820-80 DATE: September 1, 2015 TO: Honorable Mayor and City Councilmembers FROM: Christopher L. Foss, City Manager " SUBJECT: Adoption of Ordinance — Establishment of"Collector" Street Speed Limits at Six Locations in Dublin Prepared by Obaid Khan, Transportation and Operations Manager EXECUTIVE SUMMARY: On August 18, 2015, the City Council waived the reading and introduced an Ordinance for the establishment of"collector' street speed limits at six (6) locations in Dublin. The City Council is being asked to waive the second reading and adopt the Ordinance for the establishment of "collector" street speed limits at six (6) locations in Dublin. FINANCIAL IMPACT: The cost to install approximately 16 new speed limit signs on the six (6) street sections is approximately $4,500. This cost will be covered by the FY 2015/2016 Street Maintenance Operating Budget. RECOMMENDATION: Staff recommends that the City Council waive the reading and adopt the Ordinance Amending the Dublin Traffic Code to Establish Speed Limits on Portions of Brannigan Street, Brighton Drive, Donohue Drive, Landale Avenue, Starward Drive, Sierra Lane, and Summer Glen Drive. ubmitte Public Works By _/taeviewed By Director Administrative Services Di`r for DESCRIPTION: Background The California Vehicle Code (CVC) provides that police may use radar for speed enforcement as long as certain criteria are met. For roadways that are defined as "Local" streets in the California Road System Map, a prima facie 25 mph speed limit may be used. For all other roadways, an Engineering and Traffic Survey (E&TS) is required to be performed to establish a speed limit that can be enforced by means of radar. Page 1 of 3 ITEM NO. 4.2 On April 15, 2014, the City Council approved street functional classification changes to various streets in Dublin and requested Caltrans to update the California Road System. As part of this change, the six (6) street sections included in this report are no longer classified as "Local" streets. As per the CVC requirements, an E&TS is required for each of these street sections to establish an appropriate speed limit that is enforceable by means of radar. This staff report discusses the results of the E&TS and the recommended speed limits for each street. Procedure for Establishing a Speed Limit The procedure for establishing speed limits is provided by the California Manual on Uniform Traffic Control Devices (CA - MUTCD). The main criterion determined by an E&TS 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. As per the CA — MUTCD, speed limits are to be set at the nearest 5 mph increment to the critical speed. The E&TS includes an analysis of the street section to determine whether there are any offsetting factors such as residential density, pedestrian and bicycle features, intersecting driveways, accident history, schools, and other factors which may not be readily apparent to drivers, 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. Study Findings Based on the findings of the E&TS surveys, the following speed limits are recommended. All recommendations are consistent with the prima facie 25 mph speed limit on each of the six streets: 1. Brannigan Street form Dublin Boulevard to Kohnen Way — 25 MPH 2. Brighton Drive from Village Parkway to Langmuir Lane — 25 MPH 3. Donohue Drive/Landale Avenue from Amador Valley Boulevard to Vomac Road — 25 MPH 4. Starward Drive/Landale Avenue from Amador Valley Boulevard to Vomac Road — 25 MPH 5. Sierra Lane from Dougherty Road to Sierra Court— 25 MPH 6. Summer Glen Drive from Hacienda Drive to Persimmon Drive — 25 MPH NOTICING REQUIREMENTS/PUBLIC OUTREACH: As no change in the speed limit is recommended from the prior prima facie 25 MPH, no public notices were sent. Page 2 of 3 ATTACHMENTS: 1. City Council Staff Report dated August 18, 2015 (without attachments) 2. Ordinance Amending the Dublin Traffic Code to Establish Speed Limits on Portions of Brannigan Street, Brighton Drive, Donohue Drive, Landale Avenue, Starward Drive, Sierra Lane, and Summer Glen Drive Page 3 of 3 STAFF REPORT CITY CLERK CITY COUNCIL File #824-80 crr-o�- DATE: August 18, 2015 TO: Honorable Mayor and City Councilmembers FROM: Christopher L. Foss, City Manager A SUBJECT. Introduction of Ordinance— Establishment of"Collector" Street Speed Limits at Six Locations in Dublin Prepared by Obaid Khan, Transportation and Operations Manager EXECUTIVE SUMMARY: The City Council will consider an ordinance establishing speed limits of 25 MPH on six (6) street sections which were recently reclassified from a "Local" street to a "Collector" street in order to legally enforce speed limits with a radar gun. FINANCIAL IMPACT: The cost to install approximately 16 new speed limit signs on the six (6) street sections is approximately $4,500. This cost will be covered by the FY 2015/2016 Street Maintenance Operating Budget. RECOMMENDATION: Staff recommends that the City Council waive the reading and INTRODUCE an Ordinance of the City of Dublin Amending the Dublin Traffic Code to Establish Speed Limits on Portions of Brannigan Street, Brighton Drive, Donohue Drive, Landale Avenue, Starward Drive, Sierra Lane, and Summer Glen Drive. E, ut-mitied By Reviewed By Public Works Director Assistant City Manager DESCRIPTION: Background The California Vehicle Code (CVC) provides that police may use radar for speed enforcement as long as certain criteria are met. For roadways that are defined as "Local" streets in the California Road System Map, a prima facie 25 mph speed limit may be used. For all other roadways, an Engineering and Traffic Survey (E&TS) is required to be performed to establish a speed limit that can be enforced by means of radar. Page 1 of 3 ITEM NO. 4.8 On April 15, 2014, the City Council approved street functional classification changes to various streets in Dublin and requested Caltrans to update the California Road System. As part of this change, the six (6) street sections included in this report are no longer classified as "Local" streets. As per the CVC requirements, an E&TS is required for each of these street sections to establish an appropriate speed limit that is enforceable by means of radar. This staff report discusses the results of the E&TS and the recommended speed limits for each street. Procedure for Establishing a Speed Limit The procedure for establishing speed limits is provided by the California Manual on Uniform Traffic Control Devices (CA - MUTCD). The main criterion determined by an E&TS 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. As per the CA — MUTCD, speed limits are to be set at the nearest 5 mph increment to the critical speed. The E&TS includes an analysis of the street section to determine whether there are any offsetting factors such as residential density, pedestrian and bicycle features, intersecting driveways, accident history, schools, and other factors which may not be readily apparent to drivers, 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. Study Findings Based on the findings of the E&TS surveys, (Attachments 1, 2, 3, 41 5, 6), the following speed limits are recommended. All recommendations are consistent with the prima facie 25 mph speed limit on each of the six streets: 1. Brannigan Street form Dublin Boulevard to Kohnen Way—25 MPH 2. Brighton Drive from Village Parkway to Lan muir Lane— 25 MPH 3. Donohue DrivelLandale Avenue from Amad_or Valley Boulevard to Vomac Road — 25 MPH 4. Starward DrivelLandale Avenue from Amador_Valley Boulevard to Vomac Road — 25 MPH 5, Sierra Lane from Dougherty Road to Sierra Court—25 MPH 6, Summer Glen Drive from Hacienda Drive to Persimmon Drive -- 25 MPH NOTICING REQUIREMENTS/PUBLIC OUTREACH: As no change in the speed limit is recommended from the prior prima facie 25 MPH, no public notices were sent. Page 2 of 3 ATTACHMENTS: 1. Engineering and Traffic Survey- Brannigan Street from Dublin Boulevard to Kohnen Way 2. Engineering and Traffic Survey- Brighton Drive from Village Parkway to Langmuir Lane 3, Engineering and Traffic Survey - Donohue DrivelLandale Avenue from Amador Valley Boulevard to Vomac Road 4. Engineering and Traffic Survey - Starward DrivelLandale Avenue from Amador Valley Boulevard to Vomac Road 5. Engineering and Traffic Survey- Sierra Lane from Dougherty Road to Sierra Court 6. Engineering and Traffic Survey- Summer Glen Drive from Hacienda Drive to Persimmon Drive 7. Location Map S. ordinance Amending the Dublin Traffic Code to Establish Speed Limits on Portions of Brannigan Street, Brighton Drive, Donohue Drive, Landale Avenue, Starward Drive, Sierra Lane, and Summer Glen Drive Page 3 of 3 ORDINANCE NO. -15 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF DUBLIN AMENDING THE DUBLIN TRAFFIC CODE TO ESTABLISH SPEED LIMITS ON PORTIONS OF BRANNIGAN STREET, BRIGHTON DRIVE, DONOHUE DRIVE, LANDALE AVENUE, STARWARD DRIVE, SIERRA LANE, AND SUMMER GLEN DRIVE. THE CITY COUNCIL OF THE CITY OF DUBLIN DOES ORDAIN AS FOLLOWS: Section 1: The following language shall be added to Section 6.60.010 (Twenty-Five Miles per Hour) of the City of Dublin Traffic Code: Brannigan Street: Dublin Boulevard to Kohnen Way Brighton Drive: Village Parkway to Langmuir Lane Donohue Drive/Landale Avenue: Amador Valley Boulevard to Vomac Road Starward Drive/Landale Avenue: Amador Valley Boulevard to Vomac Road Sierra Lane: Dougherty Road to Sierra Court Summer Glen Drive: Hacienda Drive to Persimmon Drive Section 2. 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 3. Effective Date. This Ordinance shall take effect and be enforced thirty (30) days following its adoption. Section 4. 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. PASSED, APPROVED AND ADOPTED this 1st Day of September, 2015. AYES: NOES: ABSENT: ABSTAIN: Page 1 Mayor ATTEST: City Clerk Page 2