SR 05:240 - Laserfiche WebLink

Hopyard Road at Stoneridge Drive Mitigation - Restripe intersection and upgrade signal to provide three northbound left turn lanes. Double left turn lanes are recommended when left turn traffic volumes reach 300 vehicles per hour. The northbound left turn volume at this intersection is forecast to reach about 550 vehicles per hour. The northbound left turn volume represents about 30% of all northbound traffic. Designating one of the three northbound lanes as a left turn only lane, better distributes northbound traffic over the available lanes. Restriping and reconfiguring the traffic signal to convert the #1 northbound lane on Hopyard Road into a left tuin lane, lane significantly reduces left turn delay and queuing (down to LOS E), while providing LOS C for northbound through traffic. Hopyard Road at Valley Trails Drive / Parkside Drive Mitigation - Minor traffic signal upgrade and striping change option A coding error may have resulted in the traffic forecast being too high for northbound left turns at this intersection. But if this volume does develop, restriping the northbound #1 through lane as a second northbound left turn lane would solve the congestion problem that would result. With only two northbound lanes south of Valley Avenue, and only two eastbound left turn lanes from Valley Avenue to Hopyard Road, only two northbound through lanes are needed at Parkside Drive. However, staff believes that northbound left turns into the Valley Trails area will distribute themselves between the North and South Valley Trails entries, and a double northbound left turn will probably not be necessary. Hopyard Road at West Las Positas Boulevard Mitigation - Restripe intersection and upgrade signal to provide three westbound and northbound left turn lanes Double left turn lanes are recommended when left turn traffic volumes reach 300 vehicles per hour. The westbound left turn volume at this intersection is forecast to reach about 700 vehicles per hour. Restriping and reconfiguring the traffic signal to convert the #1 westbound lane on West Las Positas Boulevard into a left turn lane, lane significantly reduces left turn delay and queuing (down to LOS E), while providing LOS D for westbound through traffic. If the West Las Positas Interchange is constructed, northbound left turn volumes will increase from Hopyard Road to West Las Positas Boulevard. Converting the #1 northbound through lane into a third left turn lane would significantly reduce delay and queuing at the intersection under those circumstances. Johnson Drive at Providian Way Mitigation - Minor traffic signal upgrade to remove split phasing and left turn arrows. Due to the relatively low traffic volumes and good visibility, stops and delay can be reduced at this intersection by removing the left turn arrows on Johnson Drive and allowing east and westbound Providian Way traffic to move concurrently. Main Street at Ray Street Mitigation - Minor traffic signal upgrade to add protected/permissive southbound left turn arrows. This intersection is in the Downtown area and is exempt from the City's LOS D standard. However, installing protected/permissive southbound left turn arrows would significantly reduce delay and southbound queuing at peak hours. It is also hoped that the proposed double southbound left turn from