SR 05:027 - Laserfiche WebLink

Evening Peak Hour Congestion Levels At the 135 study intersections, traffic volumes collectively decrease by about 465 vehicles per hour (VPH) during the evening peak hour when the West Las Positas Boulevard widening is removed from the 1996 General Plan Roadway Network. Traffic collectively decreases by about 900 VPH at the 37 intersections in the City with 35 seconds or more of average delay, and increases by about 435 VPH at the 98 other study intersections when the road widening is removed from the network. Due to the number of possible roadway alternative combinations, the resulting LOS calculations will be performed based on future traffic model runs based on a more refined roadway network alternatives combination. The above traffic increases or decreases may occur on non-critical approaches to many intersections and have little impact on congestion at the intersections. NEXT STEPS The next report will complete the examination of the unbuilt components of the 1996 General Plan Street Network by looking at street extensions and the West Las Positas Boulevard Interchange. At the next workshop, the continuation of the review of street widenings, if not completed at the first workshop, and review of the street extension information should take place. Staff stresses that these analyses are just a part of the overall analysis planned to bring the City Council and Planning Commission to a point where informal decision-making can take place. Subsequent reports/workshops will address land use and circulation policy implications for the Circulation Element, and them "cumulative" model runs of varying land use/street network/policy scenarios are planned. Only with all these analyses will the public and decision-makers be in a position to make decisions on the final components of the Circulation Element and its companion portions of the General Plan. STAFF RECOMMENDATION Staff recommends that the workshop be focused on understanding the users of the various roadway segments and the shifts which are projected to occur should changes be (independently) made. Accordingly, staff recommends: · Staff present the information contained in this report. · Take Councilmember and Commissioner questions as each segment is discussed. · Take public questions following completion of the entire presentation. · Adjourn to the next workshop. SR 05:027 Page 67