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West Covina committee denies all‑way stop but approves stop‑bar, red‑curb and signage adjustments at Nelson/Fair Grove
Summary
The committee found the Nelson Street/Fair Grove Avenue location does not meet all‑way stop warrants but approved relocating the stop bar, adding 'cross traffic does not stop' plaques, reflective posts, markings, and extending red curb and double‑yellow centerline to improve sight lines and safety; motion passed 3–0.
City staff told the Traffic Committee that Fair Grove Avenue at South Nelson Street does not meet engineering warrants for an all‑way stop, but staff recommended a set of other measures to improve sight lines and driver awareness, and the committee approved the measures, 3–0.
Staff reported that Nelson Street (25 mph) serves as a local street and Fair Grove Avenue (35 mph) is a major collector. Staff reviewed SWITRS collision data for about January 2022 through June/July 2025 and recorded two collisions at the intersection during that period. Counts taken May 6, 2025, showed an average daily traffic (ADT) of 1,258 vehicles on Nelson Street and 3,345 on Fair Grove Avenue. A 24‑hour speed survey found an 80th‑percentile speed of 34 mph on Fair Grove Avenue (posted 35 mph). Staff said the site does not meet the CAMUTCD and city thresholds for an all‑way stop but recommended other measures to improve visibility and compliance.
The committee approved the following recommended measures: install “cross traffic does not stop” plaques and red reflective posts under the existing stop sign on Nelson Street; install stop‑ahead signs and pavement markings on the east side of Nelson Street; refresh and extend existing red curb on the south side of Fair Grove Avenue to a total of 75 feet; adjust and angle the stop bar so vehicles can stop closer to the intersection; relocate the northbound stop‑bar pavement legend on Nelson Street closer to the intersection; extend the double yellow centerline to the relocated stop bar; and remove and replace faded warning and advisory speed signage.
Committee members noted that most prior recommendations (items 1–4, 8, etc.) had been approved at the prior meeting and that the committee would only be discussing the adjustments to the stop bar, the pavement legend relocation and extension of the double yellow centerline at this session. The motion passed unanimously, 3–0. Staff said the measures will be implemented by engineering and Public Works as appropriate and that the intersection could be reevaluated later if speeding or sight‑line issues persist.
