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CC 2018-11-27_12a Certification of Five Year Radar Speed Survey MEMORANDUM TO: CITY COUNCIL FROM: TERESA McCLISH, COMMUNITY DEVELOPMENT DIRECTOR BEAU PRYOR, POLICE CHIEF BILL ROBESON, PUBLIC WORKS DIRECTOR BY: ROBIN DICKERSON, CITY ENGINEER SUBJECT: CONSIDERATION OF CERTIFICATION OF THE FIVE-YEAR RADAR SPEED SURVEY FOR SELECTED CITY STREETS DATE: NOVEMBER 27, 2018 SUMMARY OF ACTION: The California Vehicle Code requires an engineering and traffic speed survey to enable the radar enforcement of any speed limit set by a local jurisdiction. Certification of this survey would allow the City Police Department to enforce these speed limits. IMPACT ON FINANCIAL AND PERSONNEL RESOURCES: The project will require the Public Works Department staff to replace or install speed limit signs and/or poles and associated pavement markings. The cost is estimated to be $5,700. The money will be allocated as a mid-year budget adjustment from the Public Works budget. RECOMMENDATION: It is recommended the City Council adopt a Resolution Certifying the five-year radar speed survey for selected City Streets. BACKGROUND: The California Vehicle Code requires a current engineering and traffic speed survey to enable the radar enforcement of any speed limit set by a local jurisdiction. Due to the constraints of the pursuit method of enforcement on City streets, this requirement effectively dictates all enforcement of locally adopted speed limits. Because the speed surveys for selected streets are no longer current, traffic speed enforcement within the City is currently restricted to those limits expressly established by the Vehicle Code, such as the 25 mph school zone limit when children are present. Absent such express limits, the 55 mph maximum limit prevails. Item 12.a. - Page 1 CITY COUNCIL CONSIDERATION OF CERTIFICATION OF THE FIVE-YEAR RADAR SPEED SURVEY FOR SELECTED CITY STREETS NOVEMBER 27, 2018 PAGE 2 The basic presumption of the engineering and traffic speed survey requirement is that the majority of the public drives at a reasonable speed and that limits should be established accordingly. The 85th percentile is generally accepted as the statistical break between reasonable and unreasonable drivers. Speed limits in California are governed by the California Vehicle Code, Sections 22348 through 22413. California Manual on Uniform Traffic Control Devices, November 2014 (Traffic Manual), defines the methodology for performing vehicle speed surveys. The speeds of the vehicles are measured by conducting speed sampling, using a radar speed gun. The radar gun operator is stationed in an unidentified vehicle and takes speed measurements with a certified radar gun, sampling a minimum of 100 vehicles in each direction. The data is then quantified and the recommended speed limit is set at the five-mile-per-hour increment reflecting the observed 85th percentile (or critical) speed, unless the City Engineer determines that there are mitigating factors not readily observable to the driver, such as accident history and roadside conditions. The accident history is also considered, and under appropriate circumstances the City Engineer is permitted to lower the critical speed by five-miles-per- hour. Establishing a speed limit at the recommended level where the existing posted speed limit is lower should not be viewed as raising the speed limit. It is a legal establishment of the speed that reasonable drivers are already driving, and it allows enforcement of citations against those who are exhibiting unreasonable behavior. ANALYSIS OF ISSUES: Staff representatives from the Police, Public Works, and Community Development Departments in conjunction with the sub-consultant Pavement Engineering Inc. jointly reviewed the status of City streets requiring radar speed surveys to determine their validity for enforcement. Staff determined that there were 70 street segments where the surveys should be updated. Police Volunteers performed the radar speed surveys on 45 street sections from June 2018 to September 2018. The remaining 28 speed surveys were previously performed in 2016 by City Staff. Three streets were performed in both 2016 and 2018 showing that the speeds on the streets remained consistent in the two- year time period. The results of the survey are as follows: Street Street Segment Existing (MPH) Recommended (MPH) Ash St City Limits to S Elm St 35 30 Branch Mill Rd E Cherry Ave to Newsom Springs Rd 40 40 Brisco Rd Linda Dr to El Camino Real 35 35 Brisco Rd E Grand Ave to Linda Dr 30 30 Camino Mercado W Branch St to Via Las Aguilas 30 30 Camino Mercado Via Las Aguilas to Rancho Pkwy 30 35 Corbett Canyon Printz Rd to City Limits 45 45 Item 12.a. - Page 2 CITY COUNCIL CONSIDERATION OF CERTIFICATION OF THE FIVE-YEAR RADAR SPEED SURVEY FOR SELECTED CITY STREETS NOVEMBER 27, 2018 PAGE 3 Street Street Segment Existing (MPH) Recommended (MPH) Corbett Canyon Paseo St to Printz Rd 35 40 Corbett Canyon Huasna Rd to Wildwood Dr 40 35 E Branch St Garden St to Huasna Rd 30 30 E Branch St Garden St to Paulding Circle 30 30 E Branch St Bridge St to Mason St 25 25 E Cherry Ave Pacific Coast Railway to Branch Mill Rd 35 35 E Cherry Ave Traffic Way to Pacific Coast Railway 25 30 E Grand Ave Oak St to 101 Off-ramp 35 35 E Grand Ave Alpine St to Oak St 35 35 E Grand Ave Brisco Rd to Alder St 35 35 E Grand Ave Courtland St to Elm St 35 35 El Camino Real Oak Park Blvd to Robles Rd 45 45 El Camino Real Robles Rd to Stonecrest Dr 40 40 El Camino Real Stonecrest Dr to Brisco Rd 40 40 El Camino Real N Halcyon Rd to Bennett Ave 35 35 El Camino Real Bennett Ave to Cornwall Ave 35 35 Fair Oaks Ave Orchard Ave to Traffic Way 35 30 Fair Oaks Ave Valley Rd to California St 35 35 Fair Oaks Ave Valley Rd to S Halcyon Rd 40 40 Farroll Ave S Elm to Victorian Ct 30 30 Farroll Ave Bakeman Ln to S Elm St 35 30 Grace Lane N Rodeo Dr to S Rodeo Dr 35 35 Huasna Rd Corbett Canyon to Stagecoach Rd 40 40 Huasna Rd Stagecoach Rd to City Limits 45 45 James Way Oak Park Blvd to Equestrian Way 40 40 James Way Equestrian Way to Rancho Pkwy 40 40 James Way Rancho Pkwy to Hidden Oak Rd 40 35 James Way Hidden Oak Rd to Tally Ho Rd 35 35 Le Point St N Mason St to Via La Barranca -- 30 N Courtland St E Grand Ave to Brighton St 25 25 N Elm St E Grand Ave to end of Cul de sac 25 25 N Halcyon Rd E Grand Ave to Bennett Ave 35 35 N Mason St Le Point St to E Branch St -- 25 Oak Park Blvd Farroll Ave to Naples St 35 35 Oak Park Blvd W Branch St to James Way 40 40 Oak Park Blvd James Way to Meadowlark Dr 40 40 Rancho Pkwy W Branch St to Camino Mercado 35 35 Rancho Pkwy Camino Mercado to Palos Secos 40 40 Rancho Pkwy Palos Secos to Refugio Pl 40 40 S Courtland St E Grand Ave to Blueberry Ave -- 30 S Courtland St Blueberry Ave to Ash St 25 25 S Elm St E Grand Ave to Maple St 35 35 S Elm St Ash St to Fair Oaks Ave 25 25 S Elm St Fair Oaks Ave to Farroll Ave 30 30 Item 12.a. - Page 3 CITY COUNCIL CONSIDERATION OF CERTIFICATION OF THE FIVE-YEAR RADAR SPEED SURVEY FOR SELECTED CITY STREETS NOVEMBER 27, 2018 PAGE 4 Street Street Segment Existing (MPH) Recommended (MPH) S Elm St The Pike to City Limits 35 35 S Halcyon St Park Way to Dodson Way 35 35 S Halcyon St Dodson Way to Fair Oaks Ave 35 35 S Halcyon St Fair Oaks Ave to The Pike 40 40 Tally Ho Rd Printz Rd to James Way 35 35 Tally Ho Rd James Way to Via La Barranca 30 30 The Pike Del Sol St to S Elm St 35 35 The Pike S Elm St to Gaynfair Tr 40 35 The Pike Gaynfair Tr to S Halcyon Rd 40 40 Traffic Way W Branch St to Fair Oaks Ave 35 35 Traffic Way Fair Oaks Ave to 101 on ramp 35 35 Valley Rd Fair Oaks Ave to Sunrise Terrace -- 40 Valley Rd Sunrise Terrace to Tiger Tail Dr 40 40 W Branch St 101 Off ramp to Bridge St 25 25 W Branch St E Grand Ave to Vernon St -- 30 W Branch St Vernon St to Old Ranch Rd 40 40 W Branch St Old Ranch Rd to Rodeo Dr 40 40 W Branch St Rancho Pkwy to Camino Mercado 40 40 W Branch St Camino Mercado to N Oak Park Blvd 40 40 The results of the survey are as follows:  The survey verified the current posted speed limit for the majority of the streets.  Six streets are recommended for a 5 MPH reduction in the posted speed limit: o Ash St from the City Limits to S Elm St o Corbett Canyon Rd from Huasna Rd to Wildwood Dr. o Fair Oaks Ave from Orchard Ave to Traffic Way o Farroll Ave from Bakeman Lane to S Elm St o James Way from Rancho Parkway to Hidden Oaks Road o The Pike from S Elm St to Gaynfair Terrace  Three Streets are recommended for a 5 MPH increase in the posted speed limit: o Camino Mercado from Via Las Aguilas to Rancho Parkway o Corbett Canyon from Paseo St to Printz Rd o E Cherry from Traffic Way to Pacific Coast Railway  4 Street Segments are currently not posted. Speed Limits are recommended as shown above o Le Point from North Mason Street to Via La Barranca o N Mason Street from E Branch to Le Point o S Courtland from E Grand Ave to Blueberry Ave o Valley Road from Fair Oaks to Sunrise Terrace o W Branch Street from East Grand Avenue to Vernon Street  Eleven streets are recommended for speed limits to remain although the speed survey indicates speeds about 5 MPH above posted speed limits. California Item 12.a. - Page 4 CITY COUNCIL CONSIDERATION OF CERTIFICATION OF THE FIVE-YEAR RADAR SPEED SURVEY FOR SELECTED CITY STREETS NOVEMBER 27, 2018 PAGE 5 Vehicle Code Section 627 allows engineering judgement to make downward 5 MPH adjustments under appropriate circumstances. The Engineering and Traffic Survey prepared by Pavement Engineering Inc justifies the 5 MPH reduction that allow posted speeds to remain the same for the following streets: o Corbett Canyon from Printz Road to City Limits o E Branch Street from Garden Street to Paulding Circle o E Cherry Avenue from Traffic Way to Pacific Coast Railway o E Grand Avenue from Brisco Road to Alder Street o Farroll Avenue from S Elm Street to Victorian Court o James Way from Equestrian Way to Rancho Parkway o James Way from Hidden Oak Road to Tally Ho Road o N Courtland Street from E Grand Avenue to Brighton Street o S Elm Street from Ash Street to Fair Oaks Avenue o Traffic Way from Fair Oaks Avenue to 101 on Ramp o Valley Road from Sunrise Terrace to Tiger Tail Drive ALTERNATIVES: The following alternatives are provided for the Council’s consideration: 1. Adopt a Resolution certifying the 2018 Radar Speed Survey; 2. Modify and adopt the Resolution with elimination of specific streets that will remain unenforceable; 3. Do not certify the survey and perform a new survey at a future date; or 4. Provide direction to staff. ADVANTAGES: Adoption of the speed survey will provide a legal basis for the Police Department to enforce speed limits on the identified City roadway segments. Establishing appropriate speed limits improves safety. In addition, the majority of changes involve a lower speed limit, which may help address citizen concerns. DISADVANTAGES: Modifications to the speed limits can often result in citizen concerns, however staff believes all proposed changes are justified based upon the data obtained. ENVIRONMENTAL REVIEW: No environmental review is required for this item. PUBLIC NOTIFICATION AND COMMENTS: The Agenda was posted at City Hall and on the City’s website in accordance with Government Code Section 54954.2. Attachment: 1. November 2018 Engineering and Traffic Survey prepared by Pavement Engineering Inc. Item 12.a. - Page 5 RESOLUTION NO. A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF ARROYO GRANDE CERTIFYING THE FIVE-YEAR RADAR SPEED SURVEY FOR SELECTED CITY STREETS WHEREAS, the City Council of Arroyo Grande has conducted Engineering and Traffic Speed Surveys (collectively referred to herein as the “surveys”) on various City Streets in accordance with the requirements of the California Vehicle Code; and WHEREAS, the City Engineer, Public Works Director and the Community Development Director have analyzed the surveys, made appropriate adjustments, and made recommendations for the establishment of speed limits on said streets in accordance with the requirements of the California Vehicle Code; and WHEREAS, radar enforcement of any speed limit other than those expressly established by State Law requires that such speed limits be based upon an engineering and traffic speed survey as has been conducted; and WHEREAS, the Police Chief has carefully reviewed and fully supports the recommendations of the City engineer, Public Works Director and the Community Development Director. NOW, THEREFORE BE IT RESOLVED that the City Council of the City of Arroyo Grande does hereby certify the surveys and establishes speed limits on various City Streets as provided below: Street Street Segment Recommended (MPH) Ash St City Limits to S Elm 30 Branch Mill Rd E Cherry to Newsom 40 Brisco Rd Linda Dr to El Camino Real 35 Brisco Rd E Grand to Linda Dr 30 Camino Mercado W Branch to Via Las Aguilas 30 Camino Mercado Via Las Aguilas to Rancho Pwy 35 Corbett Canyon Printz Rd to City Limits 45 Corbett Canyon Paseo St to Printz Rd 40 Corbett Canyon Huasna Rd to Wildwood Dr 35 E Branch St Garden St to Huasna Rd 30 E Branch St Garden St to Paulding Circle 30 E Branch St Bridge St to Mason St 25 E Cherry Ave Pacific Coast Railway to Branch Mill Rd 35 E Cherry Ave Traffic Way to Pacific Coast Railway 30 E Grand Ave Oak St to 101 off ramp 35 E Grand Ave Alpine St to Oak St 35 E Grand Ave Brisco Rd to Alder St 35 E Grand Ave Courtland St to Elm St 35 El Camino Real Oak Park Blvd to Robles Rd 45 Item 12.a. - Page 6 RESOLUTION NO. PAGE 2 Street Street Segment Recommended (MPH) El Camino Real Robles Rd to Stonecrest Dr 40 El Camino Real Stonecrest Dr to Brisco Rd 40 El Camino Real N Halcyon Rd to Bennett Ave 35 El Camino Real Bennett Ave to Cornwall Ave 35 Fair Oaks Ave Orchard Ave to Traffic Way 30 Fair Oaks Ave Valley Rd to California St 35 Fair Oaks Ave Valley Rd to S Halcyon Rd 40 Farroll Ave S Elm to Victorian Ct 30 Farroll Ave Bakeman Ln to S Elm St 30 Grace Lane N Rodeo Dr to S Rodeo Dr 35 Huasna Rd Corbett Canyon to Stagecoach 40 Huasna Rd Stagecoach to City Limits 45 James Way Oak Park to Equestrian 40 James Way Equestrian to Rancho Pkwy 40 James Way Rancho Pkwy to Hidden Oak Rd 35 James Way Hidden Oak Rd to Tally Ho 35 Le Point St N Mason to Via La Barranca 30 N Courtland St E Grand Ave to Brighton St 25 N Elm St E Grand to end of Cul de sac 25 N Halcyon Rd E Grand Ave to Bennett Ave 35 N Mason St Le Point St to E Branch St 25 Oak Park Blvd Farroll Ave to Naples St 35 Oak Park Blvd W Branch St to James Way 40 Oak Park Blvd James Way to Meadowlark Dr 40 Rancho Pkwy W Branch St to Camino Mercado 35 Rancho Pkwy Camino Mercado to Palos Secos 40 Rancho Pkwy Palos Secos to Refugio Pl 40 S Courtland St E Grand Ave to Blueberry Ave 30 S Courtland St Blueberry Ave to Ash St 25 S Elm St E Grand Ave to Maple St 35 S Elm St Ash St to Fair Oaks Ave 25 S Elm St Fair Oaks Ave to Farroll Ave 30 S Elm St The Pike to City Limits 35 S Halcyon St Fair Oaks to The Pike 35 S Halcyon St Dodson Way to Fair Oaks 35 S Halcyon St Fair Oaks to The Pike 40 Tally Ho Printz Rd to James Way 35 Tally Ho James Way to Via La Barranca 30 The Pike Del Sol St to S Elm St 35 The Pike S Elm to Gaynfair Tr 35 The Pike Gaynfair Tr to S Halcyon 40 Traffic Way W Branch St to Fair Oaks 35 Traffic Way Fair Oaks to 101 on ramp 35 Valley Rd Fair Oaks to Sunrise Terrace 40 Valley Rd Sunrise Terrace to Tiger Tail Dr 40 W Branch St 101 Off ramp to Bridge St 25 W Branch St E Grand Ave to Vernon St 30 Item 12.a. - Page 7 RESOLUTION NO. PAGE 3 Street Street Segment Recommended (MPH) W Branch St Vernon St to Old Ranch Rd 40 W Branch St Old Ranch Rd to Rodeo Dr 40 W Branch St Rancho Pkwy to Camino Mercado 40 W Branch St Camino Mercado to N Oak Park Blvd 40 BE IT FURTHER RESOLVED that the Engineering and Traffic Speed Survey dated November 2018, prepared by Pavement Engineering, Inc. in conjunction with the City, is hereby received and accepted. On motion of Council Member , seconded by Council Member , and on the following roll call vote, to wit: AYES: NOES: ABSENT: the foregoing Resolution was passed and adopted this 27th day of November, 2018. Item 12.a. - Page 8 RESOLUTION NO. PAGE 4 JIM HILL, MAYOR ATTEST: KELLY WETMORE, CITY CLERK APPROVED AS TO CONTENT: JAMES A. BERGMAN, CITY MANAGER APPROVED AS TO FORM: HEATHER K. WHITHAM, CITY ATTORNEY Item 12.a. - Page 9 2018 CITYWIDE ENGINEERING AND TRAFFIC SURVEY (E&TS) FOR THE CITY OF ARROYO GRANDE ENGINEERING DIVISION COMMUNITY DEVELOPMENT DEPARTMENT 300 EAST BRANCH STREET ARROYO GRANDE, CA 93420 FINAL DRAFT NOVEMBER 2018 PREPARED BY ATTACHMENT 1 Item 12.a. - Page 10 CITY OF I.__-.................-l ... ' C A L IF O R N I A / .,,;?,>~ ::::::._ l 1/ "'-'-'--"~ ......._-. Pavemont Engimiering Inc. Table of Contents INTRODUCTION ....................................................................................................................... 1 ELEMENTS OF THE ENGINEERING AND TRAFFIC SURVEY .................................... 2 Speed Sampling .................................................................................................................... 2 Collision History .................................................................................................................. 4 Conditions Not Readily Apparent To Motorists ............................................................. 4 SURVEY CONDITIONS ........................................................................................................... 5 SURVEY LOCATIONS ............................................................................................................ 5 DATA COLLECTION ............................................................................................................. 5 Speed Data ............................................................................................................................ 5 Collision Data ....................................................................................................................... 5 Field Review Data ................................................................................................................ 6 ANALYSIS ................................................................................................................................... 7 CRITERIA .................................................................................................................................. 7 RESULTS AND RECOMMENDATIONS ............................................................................. 7 SEGMENTS WITH SPECIAL CONDITIONS .................................................................... 12 LEGISLATIVE REFERENCES ................................................................................................ 15 APPLICABLE SECTIONS OF CALIFORNIA VEHICLE CODE ..................................... 15 Basic Speed Law ................................................................................................................. 16 Speed Law Violations ........................................................................................................ 16 Prima Facie Speed Limits .................................................................................................. 16 Increase of Local Speed Limits to 65 Miles Per Hour ................................................... 18 Downward Speed Zoning................................................................................................. 18 Boundary Line Streets ....................................................................................................... 18 Speed Trap Prohibition ..................................................................................................... 19 Speed Trap .......................................................................................................................... 19 Speed Trap Evidence ......................................................................................................... 22 Item 12.a. - Page 11 Item 12.a. - Page 12 CERTIFICATION I, Sam Tsz Kin Ho, do hereby certify that this Engineering and Traffic Survey for the City of Arroyo Grande, California, was prepared under my direct supervision and is complete and accurate. The registered Civil Engineer attests to the technical information,contained herein and the engineering data upon which recommendations, conclusions and decisions are based. I also certify that I am duly registered as a Professional Civil Engineer in the State of California. Nov 2. l -Z.o t8 I Sam Tsz Kin Ho Date Professional Registered Civil Engineer License Number: C79939 Expires September 30, 2020 Engineering and Traffic Survey for the City of Arroyo Grande liJ Engineering and Traffic Survey for the City of Arroyo Grande 1 INTRODUCTION This Engineering and Traffic Survey is intended to be the basis for the establishment, revision, and enforcement of speed limits for selected streets within the City of Arroyo Grande. This Engineering and Traffic Survey presents recommended speed limits for 70 street segments in the City of Arroyo Grande. Engineering and Traffic Surveys are required by the State of California to establish intermediate speed limits on local streets and to enforce those limits using radar or other speed measuring devices. These surveys must be updated every 5 or 7 years to ensure the speeds reflect current conditions as dictated by the California Vehicle Code (CVC). The CVC also requires that the surveys be conducted based on the methodology required by The California Manual on Uniform Traffic Control Devices (CA MUTCD) dated November 2014. The survey was requested by the City for the proper posting of speed limits and to enable the Police Department to utilize radar or other electronic speed measuring devices for speed enforcement. CVC Sections 40801 and 40802 require Engineering and Traffic Surveys that verify the prima facie speed limit before enforcement by such a device is legal. The law further specifies that these surveys be conducted every 5 years. The surveys can be extended to 7 years provided the City's police officer(s) have completed a 24-hour radar operator course (CVC Section 40802(c)(2)(B)(i)(I)). Additionally, some surveys may be extended to 10 years if a traffic engineer certifies that no changes in roadway or traffic conditions have occurred (CVC Section 40802 (c)(2)(B)(i)(II)). These provisions assure that posted speed limits are kept reasonably current. The Engineering and Traffic Surveys for the City were conducted in accordance with procedures outlined in the California Manual on Uniform Traffic Control Devices (California MUTCD) dated November 2014 and as required by Section 627 of the California Vehicle Code. The Code further describes three elements of an engineering and traffic survey: 1. Measurement of prevailing speed; 2. Accident history; and 3. Roadway characteristics not readily apparent to the motorist. Posted speed limits are established primarily to protect the general public from the reckless and unpredictable behavior of dangerous drivers. They provide law enforcement with a clearly understood method to identify and apprehend violators of the basic speed law (CVC Section 22350). This law states that "No person shall drive a Item 12.a. - Page 13 Engineering and Traffic Survey for the City of Arroyo Grande 2 vehicle on a highway at a speed greater than is reasonable or prudent having due regard for weather, visibility, the traffic on, and the surface and width of the highway, and in no event at a speed which endangers the safety of persons or property." The posted speed limit gives motorists a clear warning of the maximum speed that is reasonable and prudent under typical driving conditions. The basic fundamentals for establishing speed limits recognize that the majority of drivers behave in a safe and reasonable manner, and therefore, the normally careful and competent actions of a reasonable driver should be considered legal. Speed limits established on these fundamentals conform to the consensus that those who drive the highway determine what speed is reasonable and safe, not on the judgment of one or a few individuals. A radar speed study is usually used to record the prevailing speed of reasonable drivers. Speed limits are also established to advise drivers of conditions which may not be readily apparent to a reasonable driver. For this reason, accident history, roadway conditions, traffic characteristics, and land use must also be analyzed before determining speed limits. Speed limit changes are usually made in coordination with physical changes in roadway conditions or roadside developments. Unusually short zones of less than one-half mile in length should be avoided to reduce driver confusion. Additionally, it is generally accepted that speed limits cannot be successfully enforced without voluntary compliance by a majority of drivers. Consequently, only the driver whose behavior is clearly out of line with the normal flow of traffic is usually targeted for enforcement. ELEMENTS OF THE ENGINEERING AND TRAFFIC SURVEY The California Manual on Uniform Traffic Control Devices (California MUTCD) dated November 2014 specifies the methodology to be used for completing Engineering and Traffic Surveys. This methodology includes an evaluation of current vehicle speeds, accident history and conditions not readily apparent to motorists. The basic elements of the Engineering and Traffic Survey are discussed in more detail as follows: Speed Sampling Existing vehicle speeds are surveyed by a certified radar operator with a calibrated radar unit in an unmarked vehicle. Speed samples are taken for each segment Item 12.a. - Page 14 Engineering and Traffic Survey for the City of Arroyo Grande 3 representing a statistically significant sample of current traffic. This data is then evaluated to identify the distribution of speeds. A key element in the evaluation is the identification of the 85th percentile speed. The 85th percentile speed is the speed at or below which 85 percent of the traffic travels. This threshold represents what is historically found to be a safe and reasonable speed for most drivers based on common roadway conditions. Therefore, a speed limit is established at the nearest 5-mile per hour (mph) increment to the 85th percentile speed, except as shown in the two options below. Options: 1. The posted speed may be reduced by 5 mph from the nearest 5 mph increment of the 85th percentile speed, in compliance with CVC Section 627 and 22358.5. 2. For cases in which the nearest 5 mph increment of the 85th percentile speed would require a rounding up, then the speed limit may be rounded down to the nearest 5 mph increment below the 85th percentile speed, if no further reduction is used. Refer to CVC Section 21400(f). If the speed limit to be posted has had the 5 mph reduction applied, then an E&TS shall document in writing the conditions and justification for the lower speed limit. The reasons for the lower speed limit shall be in compliance with CVC Section 627 and 22358.5 The following examples are provided to explain the application of these speed limit criteria: A. Using Option 1 above and first step is to round down: If the 85th percentile speed in a speed survey for a location was 37 mph, then the speed limit would be established at 35 mph since it is the closest 5 mph increment to the 37 mph speed. As indicated by the option, this 35 mph established speed limit could be reduced by 5 mph to 30 mph if conditions and justification for using this lower speed limit are documented in the E&TS. B. Using Option 1 above and first step is to round up: If the 85th percentile speed in a speed survey for a location was 33 mph, then the speed limit would be established at 35 mph since it is the closest 5 mph increment to the 33 mph speed. As indicated by the option, this 35 mph speed limit could be reduced by 5 mph to 30 mph if the conditions and justification for using this lower speed limit are documented in the E&TS. Item 12.a. - Page 15 Engineering and Traffic Survey for the City of Arroyo Grande 4 C. Using Option 2 above and first step is to round up: If the 85th percentile speed in a speed survey for a location was 33 mph, instead of rounding up to 35 mph, the speed limit can be established at 30 mph, but no further reduction can be applied. Collision History Reported collisions are reviewed for each street segment to determine if there is a higher than average rate of collisions. A segment that has an above-average collision rate typically suggests conditions that are not readily apparent to motorists. A summary of the collision rates for the 70 surveyed street segments is provided in Appendix B [ON FILE AT THE CITY]. Conditions Not Readily Apparent To Motorists Each street segment is field inspected to identify roadway conditions that may not be readily apparent to motorists. A determination is made whether any conditions are significant and warrant the recommendation of the speed limit 5 mph or more below the basic speed limit. It is important to note that The California Manual on Uniform Traffic Control Devices (California MUTCD) dated November 2014 recommends exercising great care when establishing speed limits 5 mph or more below the basic speed limit. Item 12.a. - Page 16 Engineering and Traffic Survey for the City of Arroyo Grande 5 SURVEY CONDITIONS SURVEY LOCATIONS The procedures below describe the criteria and methods used to survey selected streets within the City of Arroyo Grande. The specific location of the radar speed survey for each street segment was selected after considering the following: 1. Minimum stop sign and traffic signal influence. 2. Minimum visibility restrictions. 3. Non-congested traffic flow away from intersections and driveways. 4. Minimum influence from curves or other roadway conditions that would affect the normal operation of a vehicle. DATA COLLECTION Data of existing conditions was obtained including prevailing speed of vehicles, traffic collisions, visibility restrictions, and roadway conditions within the community. Speed data and field reviews were conducted at 70 locations during the years of 2016 and 2018. Three locations were used as samples to verify that driver behavior has not changed over the time period. Speed Data Radar speed measurements were conducted at 70 locations during the months of November-May of 2015-2016 and July-September 2018. All surveys were conducted in good weather conditions, during off-peak hours on weekdays. The radar unit was operated from an unmarked vehicle to minimize any influence on driver behavior. Typically, a minimum sample size of 100 vehicles or the total samples during a maximum period of 2 hours were obtained for each segment. Traffic speeds in both/each directions were recorded for individual segments. Collision Data Collision data was obtained from the City's SWITRS electronic collision database. For this study, collision data was used from the latest 4 years of reported accidents from January 1, 2014 to December 31, 2017. The collision rates for the 70 segments are expressed in accidents per million vehicle miles (A/MVM). To calculate these rates, 24- Item 12.a. - Page 17 Engineering and Traffic Survey for the City of Arroyo Grande 6 hour traffic volumes were collected for each street segment. This information was then entered into the following formula to determine the collision rate: 𝑅𝑅=𝐴𝐴 𝑥𝑥 1,000,000 𝑥𝑥 𝐴𝐴 𝑥𝑥 1,000,000𝑡𝑡 𝑥𝑥 365 𝑑𝑑𝑑𝑑𝑑𝑑𝑑𝑑𝑑𝑑𝑦𝑦𝑑𝑑𝑦𝑦 𝑥𝑥 𝑙𝑙 𝑥𝑥 𝑣𝑣 A = Number of midblock collisions over time period R = Collision Rate (accidents/million vehicle miles) t = Time Period Covered (in years) I = Length of Segment (miles) v = Traffic Volume (average daily traffic) The segment collision rate was then compared to the average statewide collision rate. The average statewide collision rates were obtained from 2015 Collision Data on California State Highways published by Caltrans. Field Review Data A field review was conducted for each of the selected street segments in the City with consideration for the following factors: 1. Street width and alignment (design speed); 2. Pedestrian activity and traffic flow characteristics; 3. Number of lanes and other channelization and striping patterns; 4. Frequency of intersections, driveways, and on-street parking; 5. Location of stop signs and other regulatory traffic control devices; 6. Visibility obstructions; 7. Land use and proximity to schools; 8. Pedestrian and bicycle usage; 9. Uniformity with existing speed zones and those in adjacent jurisdictions; and 10. Any other unusual condition not readily apparent to the driver. Item 12.a. - Page 18 Engineering and Traffic Survey for the City of Arroyo Grande 7 ANALYSIS CRITERIA Survey data was compiled and analyzed to determine the recommended speed limit in accordance with several criteria contained in The California Manual on Uniform Traffic Control Devices (California MUTCD) dated November 2014. Some of the criteria used are: A. The critical speed or 85th percentile speed is that speed at or below which 85 percent of the traffic is moving. This speed is the baseline value in determining what the majority of drivers believe is safe and reasonable. Speed limits set higher than the critical speed are not considered reasonable and safe. Speed limits set lower than the critical speed make a large number of reasonable drivers "unlawful," and do not facilitate the orderly flow of traffic. The "basic speed limit" is the nearest 5 mph increment to the 85th percentile speed. B. The 10 mile per hour (mph) pace speed is the 10 mph increment that contains the highest percentage of vehicles. It is a measure of the dispersion of speeds across the range of the samples surveyed. An accepted practice is to keep the speed limit within the 10 mph pace while considering the critical speed and other factors that might require a speed lower than the critical speed. C. The collision rate for each street segment is compared to average collision rates that can be reasonably expected to occur on streets and highways in other jurisdictions, in proportion to the volume of traffic per lane mile. These average collision rates have been developed by the State of California and are considered reasonable for use in the City of Arroyo Grande. RESULTS AND RECOMMENDATIONS The Engineering and Traffic Survey Forms, presented in Appendix A [ON FILE AT THE CITY], illustrate results of a thorough evaluation of the available data and recommend a speed limit for each street segment surveyed. A complete summary of all recommendations is shown in Table 2. In each case, the recommended speed limit was consistent with the prevailing behavior as demonstrated by the radar speed measurements. Typically, a speed limit in the upper range of the 10-mile pace was selected unless a collision rate significantly higher than expected was discovered or roadway conditions not readily apparent to the driver were identified. Any segments with recommended speed limits 5 mph or more below the basic speed limit are fully explained later in this report. Item 12.a. - Page 19 Engineering and Traffic Survey for the City of Arroyo Grande 8 The Legislature, in adopting Section 22358.5 of the California Vehicle Code (CVC), has made it clear that physical conditions, such as width, curvature, grade and surface conditions, or any other condition readily apparent to a driver, in the absence of other factors, would not be the basis for special downward speed zoning. In these cases, the basic speed law (CVC Section 22350) is sufficient to regulate such conditions. The recommendations contained in this Report are intended to establish prima facie speed limits. They are not intended to be absolute for all prevailing conditions. All prima facie speed violations are actually violations of the basic speed law (Section 22350 of California Vehicle Code). This statute states that a person shall not drive a vehicle at a speed greater than is safe having regard for traffic, roadway, and weather conditions. A prima facie limit is intended to establish a maximum safe speed under normal conditions. Table 1 identifies the street segments with recommended changes in posted speed limits and Table 2 summarizes the recommendations for all surveyed segments. Item 12.a. - Page 20 Engineering and Traffic Survey for the City of Arroyo Grande 9 Table 1: Street Segments with Recommended Speed Changes Table 2: Summary of Recommendations #STREET FROM TO DIR POSTED SPEED (MPH)85TH %ILE RECOMMENDED SPEED (MPH) City Limits S. Elm St EB 35 City Limits S. Elm St WB 35 Via Las Aguilas Rancho Parkway EB N/A Via Las Aguilas Rancho Parkway WB 30 Paseo St Printz Rd NB N/A Paseo St Printz Rd SB N/A Huasna Rd Wildwood Dr NB 40 Huasna Rd Wildwood Dr SB 40 Traffic Way Pacific Coast Railway Pl EB N/A Traffic Way Pacific Coast Railway Pl WB 25 Orchard Ave Traffic Way EB N/A Orchard Ave Traffic Way WB 35 Bakeman Ln S Elm St EB 35 Bakeman Ln S Elm St WB 35 Rancho Pkwy Hidden Oak Rd EB 40 Rancho Pkwy Hidden Oak Rd WB 40 N Mason St Via La Barranca EB N/A N Mason St Via La Barranca WB N/A Le Point St E Branch St NB N/A Le Point St E Branch St SB N/A E Grand Ave Blueberry Ave NB 25 E Grand Ave Blueberry Ave SB N/A S Elm St Gaynfair Tr EB 40 S Elm St Gaynfair Tr WB 40 Fair Oaks Ave Sunrise Tr NB N/A Fair Oaks Ave Sunrise Tr SB N/A E Grand Ave Vernon St EB N/A E Grand Ave Vernon St WB N/A66W BRANCH ST 32.29 30 63 VALLEY RD 41.48 40 59 THE PIKE 37.79 35 47 S COURTLAND ST 32.72 30 40 N MASON ST 25.36 25 36 LE POINT ST 33.22 30 34 JAMES WAY 36.02 35 28 FARROLL AVE 30.34 30 24 FAIR OAKS AVE 29.21 30 14 E CHERRY AVE 35.22 30 9 CORBETT CANYON RD 37.65 35 8 CORBETT CANYON RD 44.01 40 6 CAMINO MERCADO 37.56 35 1 ASH ST 33.88 30 #STREET FROM TO DIR POSTED SPEED (MPH)85TH %ILE RECOMMENDED SPEED (MPH) City Limits S. Elm St EB 35 City Limits S. Elm St WB 35 E Cherry Ave Newsom Springs Rd EB 40 E Cherry Ave Newsom Spring Rd WB 40 Linda Dr El Camino Real NB 35 Linda Dr El Camino Real SB 35 E Grand Ave Linda Dr NB 30 E Grand Ave Linda Dr SB 30 W Branch St Via Las Aguilas EB 30 W Branch St Via Las Aguilas WB N/A Via Las Aguilas Rancho Parkway EB N/A Via Las Aguilas Rancho Parkway WB 30 5 CAMINO MERCADO 33.34 30 6 CAMINO MERCADO 37.56 35 3 BRISCO RD 35.15 35 4 BRISCO RD 29.11 30 1 ASH ST 33.88 30 2 BRANCH MILL RD 43.38 40 Item 12.a. - Page 21 t t t t t t t t t t t t t Engineering and Traffic Survey for the City of Arroyo Grande 10 #STREET FROM TO DIR POSTED SPEED (MPH)85TH %ILE RECOMMENDED SPEED (MPH) Printz Rd City Limits NB 45 Printz Rd City Limits SB 45 Paseo St Printz Rd NB N/A Paseo St Printz Rd SB N/A Huasna Rd Wildwood Dr NB 40 Huasna Rd Wildwood Dr SB 40 Garden St Huasna Rd EB N/A Garden St Huasna Rd WB 30 Garden St Paulding Cir EB 30 Garden St Paulding Cir WB 30 Bridge St Mason St EB 25 Bridge St Mason St WB 25 Pacific Coast Railway Pl Branch Mill Rd EB N/A Pacific Coast Railway Pl Branch Mill Rd WB 35 Traffic Way Pacific Coast Railway Pl EB N/A Traffic Way Pacific Coast Railway Pl WB 25 Oak St 101 North Off-Ramp EB 35 Oak St 101 North Off-Ramp WB 35 Alpine St Oak St EB 35 Alpine St Oak St WB 35 Brisco Rd Alder St EB 35 Brisco Rd Alder St WB 35 Courtland St Elm St EB 35 Courtland St Elm St WB 35 Oak Park Blvd Robles Rd EB 45 Oak Park Blvd Robles Rd WB 45 Robles Rd Stonecrest Dr EB N/A Robles Rd Stonecrest Dr WB 40 Stonecrest Dr Brisco Rd EB 40 Stonecrest Dr Brisco Rd WB N/A N Halcyon Rd Bennett Ave EB 35 N Halcyon Rd Bennett Ave WB 35 Bennett Ave Cornwall Ave NB 35 Bennett Ave Cornwall Ave SB 35 Orchard Ave Traffic Way EB N/A Orchard Ave Traffic Way WB 35 Valley Rd California St EB 35 Valley Rd California St WB 35 Valley Rd S Halcyon Rd EB 40 Valley Rd S Halcyon Rd WB 40 S Elm St Victorian Ct EB 30 S Elm St Victorian Ct WB 30 Bakeman Ln S Elm St EB 35 Bakeman Ln S Elm St WB 35 N Rodeo Dr S Rodeo Dr NB 35 N Rodeo Dr S Rodeo Dr SB 35 Corbett Canyon Rd Stagecoach Rd EB 40 Corbett Canyon Rd Stagecoach Rd WB 40 29 GRACE LN 37.17 (38.95)35 30 HUASNA RD 40.43 40 27 FARROLL AVE 35.06 (36.31)30 28 FARROLL AVE 30.34 30 25 FAIR OAKS AVE 35.73 35 26 FAIR OAKS AVE 43.09 40 23 EL CAMINO REAL 35.63 35 24 FAIR OAKS AVE 29.21 30 21 EL CAMINO REAL 43.58 (41.59)40 22 EL CAMINO REAL 37.79 35 19 EL CAMINO REAL 46.26 45 20 EL CAMINO REAL 41.59 40 17 E GRAND AVE 39.88 35 18 E GRAND AVE 38.98 35 15 E GRAND AVE 37.64 35 16 E GRAND AVE 37.71 35 13 E CHERRY AVE 34.78 35 14 E CHERRY AVE 35.22 30 11 E BRANCH ST 35.24 30 12 E BRANCH ST 22.25 25 9 CORBETT CANYON RD 37.65 35 10 E BRANCH ST 32.33 30 7 CORBETT CANYON RD 50.31 45 8 CORBETT CANYON RD 44.01 40 Item 12.a. - Page 22 t t t t t t t t t t t t t t t t t t t t t t t Engineering and Traffic Survey for the City of Arroyo Grande 11 #STREET FROM TO DIR POSTED SPEED (MPH)85TH %ILE RECOMMENDED SPEED (MPH) Stagecoach Rd City Limits EB 45 Stagecoach Rd City Limits WB 45 Oak Park Blvd Equestrian Way EB 40 Oak Park Blvd Equestrian Way WB 40 Equestrian Way Rancho Pkwy EB 40 Equestrian Way Rancho Pkwy WB 40 Rancho Pkwy Hidden Oak Rd EB 40 Rancho Pkwy Hidden Oak Rd WB 40 Hidden Oak Rd Tally Ho Rd EB 35 Hidden Oak Rd Tally Ho Rd WB 35 N Mason St Via La Barranca EB N/A N Mason St Via La Barranca WB N/A E Grand Ave Brighton St NB 25 E Grand Ave Brighton St SB 25 E Grand Ave End of Cul de Sac NB 25 E Grand Ave End of Cul de Sac SB 25 E Grand Ave Bennett Ave NB 35 E Grand Ave Bennett Ave SB N/A Le Point St E Branch St NB N/A Le Point St E Branch St SB N/A Farroll Ave Naples St NB 35 Farroll Ave Naples St SB 35 42 OAK PARK BLVD W Branch St James Way NB 40 42.04 40 43 OAK PARK BLVD James Way Meadowlark Dr NB 40 41.1 40 W Branch St Camino Mercado NB 35 W Branch St Camino Mercado SB 35 Camino Mercado Palos Secos NB 40 Camino Mercado Palos Secos SB 40 Palos Secos Refugio Pl NB 40 Palos Secos Refugio Pl SB 40 E Grand Ave Blueberry Ave NB 25 E Grand Ave Blueberry Ave SB N/A Blueberry Ave Ash St NB 25 Blueberry Ave Ash St SB 25 E Grand Ave Maple St NB 35 E Grand Ave Maple St SB 35 Ash St Fair Oaks Ave NB 25 Ash St Fair Oaks Ave SB 25 Fair Oaks Ave Farroll Ave NB 30 Fair Oaks Ave Farroll Ave SB 30 The Pike City Limits NB 35 The Pike City Limits SB 35 Park Way Dodson Way NB 35 Park Way Dodson Way SB 35 Dodson Way Fair Oaks Ave NB 40 Dodson Way Fair Oaks Ave SB 40 Fair Oaks Ave The Pike NB 40 Fair Oaks Ave The Pike SB 40 Printz Rd James Way NB 35 Printz Rd James Way SB 35 James Way Via La Barranca NB 30 James Way Via La Barranca SB 3057TALLY HO RD 31.14 30 55 S HALCYON RD 40.36 40 56 TALLY HO RD 35.99 35 53 S HALCYON RD 37.84 35 54 S HALCYON RD 38.23 35 51 S ELM ST 31.53 30 52 S ELM ST 37.39 35 49 S ELM ST 38.27 35 50 S ELM ST 29.87 25 47 S COURTLAND ST 32.72 30 48 S COURTLAND ST 27.97 25 45 RANCHO PKWY 43.57 40 46 RANCHO PKWY 43.27 40 41 OAK PARK BLVD 37.88 35 44 RANCHO PKWY 36.87 35 39 N HALCYON RD 33.8 35 40 N MASON ST 25.36 25 37 N COURTLAND ST 30.06 25 38 N ELM ST 28.42 25 35 JAMES WAY 38.58 35 36 LE POINT ST 33.22 30 33 JAMES WAY 43.84 40 34 JAMES WAY 36.02 35 31 HUASNA RD 45.39 45 32 JAMES WAY 40.73 40 Item 12.a. - Page 23 t t t t t t t t t t t t t t t t t t Engineering and Traffic Survey for the City of Arroyo Grande 12 SEGMENTS WITH SPECIAL CONDITIONS The following segments surveyed had recommended speed limits that were 5 miles per hour or more below the critical speed due to conditions not readily apparent to the driver. Each segment is discussed in further detail. Segment #7- Corbett Canyon Road – From Printz Road to To City Limits • Current Posted Speed Limit : 45 MPH • 85th Percentile Calculation: 50.31 MPH • Recommended Speed Limit: 45 MPH Justification: 5 MPH reduction applied. Low visibility on horizontal curve. Driveways to residential homes. Segment #11- E Branch Street – From Garden Street to Paulding Circle • Current Posted Speed Limit : 30 MPH • 85th Percentile Calculation: 35.24 MPH • Recommended Speed Limit: 30 MPH Justification: 5 MPH reduction applied. Neighboring segments are 30 MPH going eastbound and 25 going westbound This will create potential problems for vehicles transitioning from a higher speed to a lower speed. Vertical curve is present. #STREET FROM TO DIR POSTED SPEED (MPH)85TH %ILE RECOMMENDED SPEED (MPH) Del Sol St S Elm St EB 35 Del Sol St S Elm St WB 35 S Elm St Gaynfair Tr EB 40 S Elm St Gaynfair Tr WB 40 Gaynfair Tr S Halcyon Rd EB 40 Gaynfair Tr S Halcyon Rd WB 40 W Branch St Fair Oaks Ave NB N/A W Branch St Fair Oaks Ave SB 35 Fair Oaks Ave SB HWY 101 On Ramp NB 35 Fair Oaks Ave SB HWY 101 On Ramp SB 35 Fair Oaks Ave Sunrise Tr NB N/A Fair Oaks Ave Sunrise Tr SB N/A Sunrise Tr Tiger Tail Dr NB 40 Sunrise Tr Tiger Tail Dr SB 40 101 North Off-Ramp Bridge St EB 25 101 North Off-Ramp Bridge St WB N/A E Grand Ave Vernon St EB N/A E Grand Ave Vernon St WB N/A Vernon St Old Ranch Rd EB 40 Vernon St Old Ranch Rd WB 40 Old Ranch Rd Rodeo Dr EB 40 Old Ranch Rd Rodeo Dr WB N/A Rancho Pkwy Camino Mercado EB 40 Rancho Pkwy Camino Mercado WB 40 Camino Mercado N Oak Park Blvd EB 40 Camino Mercado N Oak Park Blvd WB 40 69 W BRANCH ST 40.36 40 70 W BRANCH ST 42.37 40 67 W BRANCH ST 41.99 40 68 W BRANCH ST 42.73 40 65 W BRANCH ST 26.25 25 66 W BRANCH ST 32.29 30 63 VALLEY RD 41.48 40 64 VALLEY RD 43.3 40 61 TRAFFIC WAY 35.66 35 62 TRAFFIC WAY 38.2 35 59 THE PIKE 37.79 35 60 THE PIKE 42.91 40 58 THE PIKE 34.75 35 Item 12.a. - Page 24 t t t t t t t t t t t t Engineering and Traffic Survey for the City of Arroyo Grande 13 Segment #14- E Cherry Avenue – From Traffic Way to Pacific Coast Railway • Current Posted Speed Limit: 25 MPH • 85th Percentile Calculation: 35.22 MPH • Recommended Speed Limit: 30 MPH Justification: 5 MPH reduction applied. Residential on Westbound side. Development on Eastbound side. Recommend monitoring “ROAD WORK” traffic control during construction. Once development is completed an E&TS is recommended to reflect change in travel patterns/behavior. Segment #17- E Grand Avenue - From Brisco Road to Alder Street • Current Posted Speed Limit: 35 MPH • 85th Percentile Calculation: 39.88 MPH • Recommended Speed Limit: 35 MPH Justification: 5 MPH reduction applied. The adjacent segments shows travel behavior at 35 MPH, for consistency in travel flow it is recommended to maintain the same speed limit through this corridor. Segment #27 Farroll Avenue - From S Elm Street to Victorian Court • Current Posted Speed Limit: 30 MPH • 85th Percentile Calculation: 35.06 MPH • Recommended Speed Limit: 30 MPH Justification: 5 MPH reduction applied. Residential driveways and sight distance due to parked vehicles. This leads to a segment of an existing 25 MPH zone adjacent to this segment. Segment #33 James Way - From Equestrian Way to Rancho Parkway • Current Posted Speed Limit: 40 MPH • 85th Percentile Calculation: 43.84 MPH • Recommended Speed Limit: 40 MPH Justification: 5 MPH reduction applied. Horizontal and Vertical curves in this area. Will keep traffic consistent with Westbound and Eastbound existing speed limits. Class II Bike lane facility are present in this segment. Segment #35 James Way - From Hidden Oak Road to Tally Ho Road • Current Posted Speed Limit: 35 MPH • 85th Percentile Calculation: 35.40 MPH (east) 40.79 MPH (west) • Recommended Speed Limit: 35 MPH Justification: 5 MPH reduction applied. Both directions have parking on both sides. Residential homes with driveways on both sides. Item 12.a. - Page 25 Engineering and Traffic Survey for the City of Arroyo Grande 14 Segment #37 N Courtland Street - From E Grand Avenue to Brighton Street • Current Posted Speed Limit: 25 MPH • 85th Percentile Calculation: 30.06 MPH • Recommended Speed Limit: 25 MPH Justification: A senior apartment complex is located on the west side of the roadway. CVC Section 22352 allows adjustment for roadways adjacent to senior facilities when “SENIOR" warning signs are in place. Segment #50 S Elm Street - From Ash Street to Fair Oaks Avenue • Current Posted Speed Limit: 25 MPH • 85th Percentile Calculation: 29.87 MPH • Recommended Speed Limit: 25 MPH Justification: A senior apartment complex is located on the east side of the roadway. CVC Section 22352 allows adjustment for roadways adjacent to senior facilities when “SENIOR" warning signs are in place. Segment #62 Traffic Way - From Fair Oaks Avenue to 101 on Ramp • Current Posted Speed Limit: 35 MPH • 85th Percentile Calculation: 40.88 MPH (North) 32.07 (South) • Recommended Speed Limit: 35 MPH Justification: 5 MPH reduction applied. Development on north side. Recommend monitoring “ROAD WORK” traffic control during construction. A traffic signal is proposed at the intersection of Fair Oaks Ave after E Cherry Development. Once development is completed an E&TS is recommended to reflect change in travel patterns/behavior. Segment #64 Valley Road - From Sunrise Terrace to Tiger Tail Drive • Current Posted Speed Limit: 40 MPH • 85th Percentile Calculation: 43.3 MPH • Recommended Speed Limit: 40 MPH Justification: 5 MPH reduction applied. Item 12.a. - Page 26 Engineering and Traffic Survey for the City of Arroyo Grande 15 LEGISLATIVE REFERENCES APPLICABLE SECTIONS OF CALIFORNIA VEHICLE CODE SECTION 1. Section 627 of the Vehicle Code: Section 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. Item 12.a. - Page 27 Engineering and Traffic Survey for the City of Arroyo Grande 16 Basic Speed Law CVC Section 22350. No person shall drive a vehicle upon a highway at a speed greater than is reasonable or prudent having due regard for weather, visibility, the traffic on, and the surface and width of, the highway, and in no event at a speed which endangers the safety of persons or property. Speed Law Violations CVC Section 22351. (a) The speed of any vehicle upon a highway not in excess of the limits specified in Section 22352 or established as authorized in this code is lawful unless clearly proved to be in violation of the basic speed law. (b) The speed of any vehicle upon a highway in excess of the prima facie speed limits in Section 22352 or established as authorized in this code is prima facie unlawful unless the defendant establishes by competent evidence that the speed in excess of said limits did not constitute a violation of the basic speed law at the time, place and under the conditions then existing. Prima Facie Speed Limits CVC Section 22352. The prima facie limits are as follows and shall be applicable unless changed as authorized in this code and, if so changed, only when signs have been erected giving notice thereof: (a) Fifteen miles per hour: (1) When traversing a railway grade crossing, if during the last 100 feet of the approach to the crossing the driver does not have a clear and unobstructed view of the crossing and of any traffic on the railway for a distance of 400 feet in both directions along such railway. This subdivision does not apply in the case of any railway grade crossing where a human flagman is on duty or a clearly visible electrical or mechanical railway crossing signal device is Item 12.a. - Page 28 Engineering and Traffic Survey for the City of Arroyo Grande 17 installed but does not then indicate the immediate approach of a railway train or car. (2) When traversing any intersection of highways, if during the last 100 feet of the driver's approach to the intersection, the driver does not have a clear and unobstructed view of the intersection and of any traffic upon all of the highways entering the intersection for a distance of 100 feet along all those highways, except at an intersection protected by stop signs or yield right-of- way signs or controlled by official traffic control signals. (3) On any alley. (b) Twenty-five miles per hour: (1) On any highway other than a state highway, in any business or residence district unless a different speed is determined by local authority under procedures set forth in this code. (2) When approaching or passing a school building or the grounds thereof, contiguous to a highway and posted with a standard "SCHOOL" warning sign, while children are going to or leaving the school either during school hours or during the noon recess period. The prima facie limit shall also apply when approaching or passing any school grounds which are not separated from the highway by a fence, gate or other physical barrier while the grounds are in use by children and the highway is posted with a standard "SCHOOL" warning sign. For purposes of this subparagraph, standard "SCHOOL" warning signs may be placed at any distance up to 500 feet away from school grounds. (3) When passing a senior center or other facility primarily used by senior citizens, contiguous to a street other than a state highway and posted with a standard "SENIOR" warning sign. A local authority may erect a sign pursuant to this paragraph when the local agency makes a determination that the proposed signing should be implemented. A local authority may request grant funding from the Active Transportation Program pursuant to Chapter 8 (commencing with Section 2380) of Division 3 of the Streets and Highways Code, or any other grant funding available to it, and use that grant funding to pay for the erection of those signs, or may utilize any other funds available to it to pay for the Item 12.a. - Page 29 Engineering and Traffic Survey for the City of Arroyo Grande 18 erection of those signs, including, but not limited to, donations from private sources. Increase of Local Speed Limits to 65 Miles Per Hour CVC Section 22357. (a) Whenever a local authority determines upon the basis of an engineering and traffic survey that a speed greater than 25 miles per hour would facilitate the orderly movement of vehicular traffic and would be reasonable and safe upon any street other than a state highway otherwise subject to a prima facie limit of 25 miles per hour, the local authority may by ordinance determine and declare a prima facie speed limit of 30, 35, 40, 45, 50, 55 or 60 miles per hour or a maximum speed limit of 65 miles per hour, whichever is found most appropriate to facilitate the orderly movement of traffic and is reasonable and safe. The declared prima facie or maximum speed limit shall be effective when appropriate signs giving notice thereof are erected upon the street and shall not thereafter be revised except upon the basis of an engineering and traffic survey. This section does not apply to any 25-mile-per-hour prima facie limit which is applicable when passing a school building or the grounds thereof or when passing a senior center or other facility primarily used by senior citizens. (b) This section shall become operative on the date specified in subdivision (c) of Section 22366. Downward Speed Zoning CVC Section 22358.5. It is the intent of the Legislature that physical conditions such as width, curvature, grade and surface conditions, or any other condition readily apparent to a driver, in the absence of other factors, would not require special downward speed zoning, as the basic rule of Section 22350 is sufficient regulation as to such conditions. Boundary Line Streets CVC Section 22359. Item 12.a. - Page 30 Engineering and Traffic Survey for the City of Arroyo Grande 19 With respect to boundary line streets and highways where portions thereof are within different jurisdictions, no ordinance adopted under Sections 22357 and 22358 shall be effective as to any such portion until all authorities having jurisdiction of the portions of the street concerned have approved the same. This section shall not apply in the case of boundary line streets consisting of separate roadways within different jurisdictions. Speed Trap Prohibition CVC Section 40801. No peace officer or other person shall use a speed trap in arresting, or participating or assisting in the arrest of, any person for any alleged violation of this code nor shall any speed trap be used in securing evidence as to the speed of any vehicle for the purpose of an arrest or prosecution under this code. Speed Trap CVC Section 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 paragraph (1) of subdivision (b) 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 object. 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 one that is functionally classified as “local” on the “California Road Systems Maps,” that are approved Item 12.a. - Page 31 Engineering and Traffic Survey for the City of Arroyo Grande 20 by the Federal Highway Administration and maintained by the Department of Transportation. When a street or road does not appear on the “California Road System Maps,” it may be defined as a “local street or road” if it 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 mile of an uninterrupted length. Interruptions shall include official traffic control devices 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 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 Item 12.a. - Page 32 Engineering and Traffic Survey for the City of Arroyo Grande 21 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 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 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 paragraph (1) of subdivision (b) 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 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 Item 12.a. - Page 33 Engineering and Traffic Survey for the City of Arroyo Grande 22 traffic volume, 10 years. (ii) This subparagraph does not apply to a local street, road, or school zone. Speed Trap Evidence CVC Section 40803. a) No evidence as to the speed of a vehicle upon a highway shall be admitted in any court upon the trial of any person in any prosecution under this code upon a charge involving the speed of a vehicle when the evidence is based upon or obtained from or by the maintenance or use of a speedtrap. b) In any prosecution under this code of a charge involving the speed of a vehicle, where enforcement involves the use of radar or other electronic devices which measure the speed of moving objects, the prosecution shall establish, as part of its prima facie case, that the evidence or testimony presented is not based upon a speed trap as defined in paragraph (2) of subdivision (a) of Section 40802. c) When a traffic and engineering survey is required pursuant to paragraph (2) of subdivision (a) of Section 40802, evidence that a traffic and engineering survey has been conducted within five years of the date of the alleged violation or evidence that the offense was committed on a local street or road as defined in paragraph (2) of subdivision (a) of Section 40802 shall constitute a prima facie case that the evidence or testimony is not based upon a speed trap as defined in paragraph (2) subdivision (a) of Section 40802. Item 12.a. - Page 34 Engineering and Traffic Survey for the City of Arroyo Grande 23 City of Arroyo Grande Engineering and Traffic Survey APPENDIX TABLE OF CONTENTS A ................... Radar Speed Distribution B ................... Collision Rates C ................... Average Daily Traffic Volumes D................... Speed Survey Segments Map (Attachment 2) & (Attachment 3) Item 12.a. - Page 35 Engineering and Traffic Survey for the City of Arroyo Grande 24 APPENDIX A Radar Speed Distribution Item 12.a. - Page 36 Engineering and Traffic Survey for the City of Arroyo Grande 25 APPENDIX B Collision Rates Item 12.a. - Page 37 Engineering and Traffic Survey for the City of Arroyo Grande 26 APPENDIX C Average Daily Traffic (ADT) Volumes Item 12.a. - Page 38 Engineering and Traffic Survey for the City of Arroyo Grande 27 APPENDIX D Speed Survey Segments Map (Attachment 2) & (Attachment 3) Item 12.a. - Page 39 CRANBERRY STSPRUCE STMAPLE ST LOS OL IVOS LN NEWPORT AV ALLEN S TOAK STST RAFFIC WY LONGD E N D R TAYLORPL WILD OAKPLCARMELLA DRBELL STBENNETT AV FAEH AV WAL L E R P L GARFI ELDPLS U N RIS E T R WILDWOO D D R LEANNA DREQUESTRIAN WY SALPINESTG ROVEC T CERROVISTAC RVERNONSTMCKINLEYST MEADOWWY VIALABARRANCA CROWN H I L L TIGERT AI LDRGULARTE RDBAKEMAN LNRUTHANNWYECHE R R Y A V WCHERRY AVBRIDGE STROSE MA RY L N PLATINOLN LE PO INTTR STAGECOACH RDFLORARDPALOSSECOSCHAPARRALLNBOYSENBERRY STMESQUITE L N GRIEBDR VARDLOOMISLN WHITELEYSTROBIN CRROGERS CT HILLS IDECTHIDDENOAKRD MAGNOLIADR CROWNTRLE POIN T S T PAUL PLLA CRESTADRGAYNFAIR TRPOPLAR ST ALDER STSYCAMOREDRFAIRVIEWDR MYRTLE ST CROSS STASPEN STTRINITY A V CLARENCE AVSHORT STJENNYPLVIA VAQUEROALLEYL O S CIER V OS ORO DRIDE ST BRIGHTON AV NELSON S T POOLE S T HODGESRD VISTADR C A S T I L LO D E LMA R OLOHAN A L L E Y RO D EO DR WESLEYSTCORNWAL L A V VIALASAGUILAS VICTOR IAWYBAMBICTPECAN PLPLATARDLACANADA NRENASTNALPINESTWILTON PL VISTA C R MAYST PILGRI M W Y CEDAR ST LI N D A D R SRENASTREFUGIOPLEMERALD BAY DR PASE O ST DELSURPALM CT PARK WY VIABANDOLER OANDRE DRSIE R R A D R S MASONST EMAN CT VI ABERROSC O B REPLCOLINA ST LEMONL N MERCEDES LN LANCASTER DRLIERLY LN I KEDAWYRO S EWOO D L NCAMPANAPL CERROVISTALN CALIFORN IA STORCHARD AVNEWMAN DR OA K WO ODCTMILL ERWYHAVEN C T SAGE ST CAMERON CT RESERVOIRRDJUNIPER STA R C A D I A AVENIDADEDI AMANT E SVIABELM ONTEARABIANCR CAROL PLARROYOAVCORR ALPLPINESTSTILLWELLDRMYRTLEDR GOLDENWESTPLWOODPLCOACH RD SANDALWOOD AV ASILOLOSBERROSRD UNNAMED STDIANA PLB R O A D MOO R DRSWEET P E A C T TANNERLNRALPH BECKLNVICTORIAN CTG R EENWOODDR ORCHID L N KINGSB U R Y CT C O V I N G T O NDRE A TO N DRD E V O N S H IR E DROLIVE ST CANYONWYPECAN STBEECH STDEL SOL STTODD LN TIERRA STRI D G E V I EW W Y DIXSONSTF A R N SW ORTHDRSTARLIGHTLNDEERTRAILCR JENNING S DRMORNINGRISELNWILLOWLN G L E NO A K DR H A CIENDA D R INNESL E Y D R PACIFI C POINTEWYMATTHE WWYC INDYWYSTANLEY AVVIRGINIA DR LARCHMONTDR S OM B RI L L O W Y MESADRASH ST HUEBNERLN ZOGATAWYMONTEGO ST SPANISH M OSS L N TURQUOISED RPEARL DR P E A RWOO D A V STATION WY VIL L A G E GLENDRPUESTADELSOL ACORN D R CHILTONST EASYST OLDRANCHRDHILL C RE S T D R SUN S E T D R TEMPUSCRSTO N E C R E ST DR ELDERBERR YCT GARDENSTWOODLANDDRWALNUT STDODSON WY S HALCYON RDCORB ETT C A N Y O N R D EG R A N D A V TR AFFI CWYFAIROAKSAVOAKPARKBLVD VALLEY RD FARROLLAV RANCHO P KWY BRISCO R D THE PIKESELMSTS COURTLAND STASH ST E L C A M I N O R E A L HUASNARD JAMES WY ECHER R Y A V TALLY H O R D N OYES RD CAMINO MERCADO BRANCHMILL R DGRACELN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1718 19 20 21 22 23 24 25 26 2728 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 656667 68 69 70 SPEED SURVEY 2018 THIS MAP DISPLAYS STREET SEGMENTS SURVEYED AS PART OF THE 2016 AND 2018 SPEED SURVEY EFFORTS. SEGMENTS ARE LABELED BY SEGMENT ID. APPROXIMATE RADAR LOCATIONS ARE ALSO SHOWN FOR REFERENCE. CITY OF ARROYO GRANDE COMMUNITY DEVELOPMENT DEPARTMENT | ENGINEERING DIVISION SURVEY SEGMENTS AND APPROXIMATE RADAR LOCATIONS SURVEY SEGMENTS CITY LIMITS 2016 RADAR LOCATIONS 2018 RADAR LOCATIONS G 0 0.5 10.25 0.75 MILES N ELM STN COURTLAND STW B R A N C H S T N HALCYON RDE B RANCH STE GRAND A V CREATED BY: C. KARAMANLIS; PROGRAM ANALYST; NOV. 2018 ATTACHMENT 2 Item 12.a. - Page 40 - 0 .__._. 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SEGMENTS ARE LABELED BY SEGMENT ID. ADJACENT PARCEL LAND USE FOR EACH SEGMENT IS ALSO SHOWN FOR REFERENCE. CITY OF ARROYO GRANDE COMMUNITY DEVELOPMENT DEPARTMENT | ENGINEERING DIVISION SURVEY SEGMENTS AND ADJACENT PARCEL LAND USE SURVEY SEGMENTS CITY LIMITS LAND USE CATEGORIES AGRICULTURE CONSERVATION OPEN SPACE COMMUNITY FACILITIES SINGLE FAMILY VERY LOW DENSITY SINGLE FAMILY LOW DENSITY SINGLE FAMILY LOW-MEDIUM DENSITY SINGLE FAMILY MEDIUM DENSITY MULTI-FAMILY MEDIUM-HIGH DENSITY MULTI-FAMILY HIGH DENSITY MULTI-FAMILY VERY HIGH DENSITY MIXED-USE VILLAGE CORE OFFICE PROFESSIONAL REGIONAL COMMERCIAL G 0 0.5 10.25 0.75 MILES N ELM STN COURTLAND STW B R A N C H S T N HALCYON RDE B RANCH STE GRAND A V CREATED BY: C. KARAMANLIS; PROGRAM ANALYST; NOV. 2018 ATTACHMENT 3 Item 12.a. - Page 41 --D -D -D D --D --- ~ . l --• I , I . 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