The San Diego County Board of Supervisors approved an all-way stop control at the intersection of Marilla Drive and Westhill Road.
A 4-0 vote April 10, with Greg Cox at a National Association of Counties meeting, approved the first reading and introduction of the ordinance for an all-way stop control at the Lakeside intersection. The supervisors’ 5-0 vote May 1 approved the second reading and adoption of the ordinance, which will take effect May 31 although the county’s Department of Public Works can place signage prior to then.
Marilla Drive is a striped two-lane roadway which also has edge line striping. The street has 24 feet of travel width with a road bed ranging from 28 to 36 feet in width. It is not classified on the mobility element of the county’s general plan, and its 25 mph speed limit is certified for radar enforcement.
Westhill Road, whose northern end is Marilla Drive, is also a striped two-lane roadway with 24 feet of travel width and a road bed; it is not classified on the mobility element and has no posted speed limit.
An October 2018 traffic survey indicated average daily volumes at the intersection of 2,080 eastbound motorists on Marilla Drive, 1,470 westbound vehicles on Marilla Drive, and 810 northbound drivers on Westhill Road.
During the 36-month period from Sep. 1, 2015, to Aug. 31, 2018, three collisions were reported at the intersection including one which involved injury.
The statewide collision rate for vehicles entering similar intersections is 0.14 per million vehicles. The collision rate for Marilla Drive and Westhill Road is 0.63 per million vehicles.
The county’s Traffic Advisory Committee reviewed the intersection Jan. 25 and recommended an all-way stop control.