Traffic Engineering Survey City of Rancho Palos Verdes

1. S N n.t.s. R1 R1 40 35 S R1 R1 35 G STREET: PVDE Traffic Engineering Survey City of Rancho Palos Verdes LIMITS: Crest Rd - Miraleste Dr (SHEET 2 OF 2) DATE: 9-9-07 ENGINEER: JACK RYDELL SIGNATURE: MAP SYMBOLS Note: Speed limit signs shown are existing. They shall be modified as appropriate upon adoption of speed zone recommendations. Corsini Pl Via Colinita SCHOOL Calle Aventura La Vista Verde Dr TRAFFIC SIGNAL R1 30 R-1 STOP SIGN PVDE R1 R1 R-2 SPEED LIMIT R1 San Ramon Dr Miraleste Pl PARK R1 P Via Subida Via Frascati Diamonte Ln Miraleste Dr R1 CROSSING GUARD Crest Rd 30 SCHOOL CROSSWALK (sheet 2 limits) (sheet 1 limits) CROSSWALK DISTANCE 1.45 miles (7,700 ft) – 1.21 miles (6,400 ft) this sheet ALIGNMENT Rolling with horizontal curves. PARKING RESTRICTIONS None. STREET WIDTH 28’ - 38’ NO. OF LANES AND MEDIAN One lane in each direction separated by double yellow centerline. Limited shoulder access on both sides. IMPROVEMENTS (SW, C & G) Intermittent asphalt sidewalk on the e/s; Intermittent curb and gutter. FRONTING DEVELOPMENT Fronting residential and undeveloped. Commercial on s/e corner of Miraleste Dr. AVERAGE DAILY TRAFFIC 7,660 – 5/06 9/5/07 – at Via Subida SPEED CHECK (DATE/LOC) AVERAGE SPEED: 35 MPH CRITICAL SPEED: 38 MPH 10 MILE PACE: 30 - 39 MPH TOTAL MIDBLOCK ACC: 5 NO. W/SPEEDING: 3 PREDOMINATE: Lost control HBD, DRUNK, H&R: 0 2-YEAR ACCIDENT DATA THRU 7-07 ACCIDENT RATE: 0.74 ACCIDENTS PER MILLION VEHICLE MILES DISTRICT 7 AVERAGE: 1.98 ACCIDENTS PER MILLION VEHICLE MILES EXISTING SPEED ZONE – 35 /30 MPH PROPOSED SPEED ZONE – 35 MPH COMMENTS See Reverse Side

2. STREET: PVDE Traffic Engineering Survey City of Rancho Palos Verdes LIMITS: Crest Rd - Miraleste Dr (SHEET 2 OF 2) PROPOSED SPEED ZONE – 35 MPH • Comments: • This segment of roadway is generally characterized by one travel lane in each direction with substantial fronting single-family residential development and numerous sharp horizontal curves. In addition to driveway access, there are also several intersecting roadways, both public and private. It has been evaluated in two parts to acknowledge the distinctly different roadway characteristics on the short southern portion, between Crest Road and Calle Aventura. The northern portion, which constitutes 1.21 miles of the segment’s 1.45 miles total length, is detailed on this sheet (sheet 2 of 2). The southern portion is only 0.24 miles long and is detailed on sheet 1 of 2. • 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. The southern portion (sheet 1 of 2) has insufficient length to support a separate speed zone based on MUTCD procedures. 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 85th 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 severely limited visibility for vehicles exiting the side streets and driveways when viewing traffic on Palos Verdes Drive East due to the horizontal curvature. 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 85th percentile speed in order to establish a reasonable and safe speed limit. Therefore, it is recommended that a 35 mph speed zone be established for this segment.