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Consideration of request from Engineering Division to install stop signs on the Clarke Street approaches to 117th Street
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Submitted by:
Michael May, PE, PTOE, RSP1
Department:
DPW - Engineering
A. Issue
Visual obstructions may block lines of sight and may not allow a road user to yield or stop in compliance with the normal right-of-way rule.
B. Background/Options
The City has adopted a policy that follows national standards related to the installation of yield and stop signs. The policy allows residents to request consideration for stop signs when they believe a condition, as described in the Manual on Uniform Traffic Control Devices (MUTCD), has been met. Staff received a request to determine if stop control is appropriate at the 117th Street intersection with Clark Street and analyzed if such traffic control is warranted.
The warrants for two-way stop control are outlined below.
* Traffic Volumes: The combined volume of all vehicular, pedestrian, and bicycle volume entering from all approaches averages more than 2,000 units per day. This warrant was not analyzed.
* Vision Issue(s): Ability to see conflicting traffic on an approach is not sufficient to allow a road user to yield or stop in compliance with the normal right-of-way rule. The location of hills in the southeast and southwest corners block adequate lines of sight.
* Crashes: The intersection has 3+ crashes over a two-year period or 5+ crashes in a three-year period susceptible to correction by yield or two-way stop. Based on an analysis of intersection crashes for the three-year period of July 1, 2021 through June 30, 2024, one crash susceptible to correction - an angle crash - was reported.
Two-way stop control is warranted and necessary for motorists to properly see conflicting traffic. Staff recommends installing stop control on the Clarke Street approaches to 117th Street.
C. Strategic Plan (Area of Focus)
Priority 2: Public Safety, Goal 2. Proactively address pedestrian, bi...
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