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Traffic Engineering Survey City of Rancho Palos Verdes DISTANCE ALIGNMENT PARKING RESTRICTIONS STREET WIDTH NO. OF LANES AND MEDIAN IMPROVEMENTS (SW, C.

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Presentation on theme: "Traffic Engineering Survey City of Rancho Palos Verdes DISTANCE ALIGNMENT PARKING RESTRICTIONS STREET WIDTH NO. OF LANES AND MEDIAN IMPROVEMENTS (SW, C."— Presentation transcript:

1 Traffic Engineering Survey City of Rancho Palos Verdes DISTANCE ALIGNMENT PARKING RESTRICTIONS STREET WIDTH NO. OF LANES AND MEDIAN IMPROVEMENTS (SW, C & G) FRONTING DEVELOPMENT SPEED CHECK (DATE/LOC) 2-YEAR ACCIDENT DATA THRU 7-07 COMMENTS TOTAL MIDBLOCK ACC: 1 AVERAGE DAILY TRAFFIC EXISTING SPEED ZONE – 35 MPHPROPOSED SPEED ZONE – 35 MPH ACCIDENT RATE: 1.12 ACCIDENTS PER MILLION VEHICLE MILESDISTRICT 7 AVERAGE: 1.98 ACCIDENTS PER MILLION VEHICLE MILES NO. W/SPEEDING: 0 PREDOMINATE: Lost control HBD, DRUNK, H&R: 0 AVERAGE SPEED: 36 MPHCRITICAL SPEED: 40 MPH10 MILE PACE: 31-40 MPH STREET: PVDE DATE: 9-10-07ENGINEER: JACK RYDELLSIGNATURE: LIMITS: 2,900 ft n/o PVDS – Crest Rd (SHEET 2 OF 3) MAP SYMBOLS S SCHOOL TRAFFIC SIGNAL R-1 STOP SIGNR1 40R-2 SPEED LIMIT CROSSING GUARD SCHOOL CROSSWALK CROSSWALK G S P PARK 1.36 miles (7,200 ft) – 0.42 miles (2,200 ft) this sheet Downgrade to the south with horizontal curves. None. One lane in each direction separated by double yellow centerline. Undeveloped and non-fronting residential. No sidewalk. Intermittent curb and gutter. Limited shoulder access on both sides 28’ - 50’ 2,906 – 5/06 9/5/07 – 1,100 to 1,800 ft s/o Ganado Dr PVDE Vista Del Mar Ganado Dr Casalina Dr Crest Rd R1 San Ramon Dr (sheet 1 limits) (sheet 2 limits) (sheet 3 limits) 35 S Marymount College 35 See Reverse Side N n.t.s. Scenic Turnout Note: Speed limit signs shown are existing. They shall be modified as appropriate upon adoption of speed zone recommendations.

2 Traffic Engineering Survey City of Rancho Palos Verdes STREET: PVDE LIMITS: 2,900 ft n/o PVDS – Crest Rd (SHEET 2 OF 3) Comments: The segment of roadway shown on sheets 1-3 is generally characterized by one travel lane in each direction with no fronting development. The middle portion of the segment has large horizontal curves and a downgrade to the south. This middle portion of the segment is detailed on this sheet (sheet 2 of 3). The remaining two portions are detailed on sheets 1 and 3. The southern portion consists of Palos Verdes Drive East within the switchbacks, while the northern portion begins at Ganado Drive and ends at Crest Road. This segment of roadway has been evaluated in three parts because all of the portions are less than 0.5 miles long. The California Manual of Uniform Traffic Control Devices (MUTCD), which is authorized by the California Vehicle Code (CVC) as the legal procedure for establishing speed zones, states that speed zones should not be less than 0.5 miles in length (see pages 2B-8 and 2B- 10). Therefore, shorter portions must be combined into longer segments. In addition to the above MUTCD requirement, short speed zones are not appropriate due to their adverse effect on traffic safety by: Increasing motorist confusion and potentially unexpected driver behavior due to changing traffic regulations; Hampering enforcement efforts by issues associated with speed limit boundaries; and, Increasing the potential for motorists to drive at different speeds, which increases conflict and accident potential. One radar speed measurement was taken for this portion of the segment, with the 85 th percentile speed suggesting that a speed zone of 40 mph would be appropriate. However this roadway is very narrow, has limited shoulder area with no defined bike lane and is extensively used by bicyclists, creating the potential for substantial conflict with vehicles. There is no sidewalk. Considering these factors and CVC Section 627, which specifies that pedestrian and bicyclist safety be considered when determining a speed limit, it is appropriate to apply a 5 mph reduction from the 85 th percentile speed in order to establish a reasonable and safe speed limit. Each of the other two portions of this segment support a 35 mph speed limit (see sheets 1 and 3), thereby resulting in a consistent 35 mph speed limit between 2,900 feet north of Palos Verdes Drive East (the southern limit of the switchbacks) and Crest Road. This combined segment (sheets 1-3) has a length of approximately 1.36 miles and is appropriate under MUTCD procedures. Therefore, it is recommended that a 35 mph speed zone be established for this segment. PROPOSED SPEED ZONE – 35 MPH


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