SR 05:223 - Laserfiche WebLink

As can be seen in the table above, speed lumps are far more effective in slowing speeds on residential streets than are neighborhood traffic circles or raised median islands. Speed lumps are also far less cosily to install and maintain. At an installed cost of $3,000 to $5000 per speed lump, they compare favorably with other traffic calming devices. The speed lumps that were installed on Crellin Road are preformed mats made of recycled rubber. Future speed lumps formed using asphalt material would reduce this cost even further. The pilot installation used the preformed mats because they could easily be removed or relocated, if necessary. Speed lumps can be installed without the removal of parking, providing staff with the needed low cost and low parking impact tool to calm traffic. Staff recommends modification of the City of Pleasanton Traffic Calming Program to allow the use of modified speed lumps on residential streets. Radar Speed Signs For years, radar speed signs mounted in trailers have been an effective short-term tool used to reduce speeds and remind drivers of the posted limit. The Police Department uses its radar trailer on an almost daily basis to help control speeds. Recent advances in the LED Location Manufacturer technology have significantly Black Ave eastbound, east of Harvest Rd Western Pacific Black Ave westbound, east of Lo,qanberry Way Western Pacific reduced the power Case Ave northbound at Hearst Elementary Western Pacific consumption of these signs Case Ave spouthbound at PMS Western Pacific and made it feasible to install Division St southbound, south of Fair St Western Pacific these signs with solar panels First Street northbound at Neal St Fortel Traffic (Vcalm) instead of bulky batteries. First Street southbound at Neal St ' Fortel Traffic (Vcalm) This reduced power Foothill Rd southbound, north of Jor,qensen Western Pacific Muirwood Drive South, southbound Sun-Lab Tech consumption has not only Santa Rita Rd southbound at Amador H.S. Western Pacific made the signs more Valley Ave eastbound at Northway Rd Western Pacific economical, it has reduced the Vineyard Ave eastbound, west of Montevino Fortel Traffic CVcalm) size and cost significantly Vineyard Ave westbound, east of Montevino Fortel Traffic {Vcalm) enough that permanent West Las Positas westbound at HART M.S. Western Pacific installations of the radar speed signs are possible. Traffic engineering staff has purchased radar speed signs from three different manufacturers and conducted speed measurements both before and after the signs were installed to determine the short- and long-term impact of their use. Staff has received numerous calls requesting the signs as well as responses from residents on how effective the signs have been in slowing down vehicles. Driver response to the signs is visible; as vehicles approach the sign, it is easy to see the reduction in speed toward the posted limit. Along Santa Rita Road adjacent to Amador High School, the speed limit is 35 mph most of the day, and 25 mph when students are coming or going from the school. The before and after SR:05:223 Page 7 of 9