Determine whether the criteria for installation of multi-way stop control are satisfied for an intersection with a total entering volume of 230 veh/h on the major street approaches, 220 veh/h on the minor street approaches, and 6 crashes within the last 12 months that could be avoided had multi-way stop control been in place.
What will be an ideal response?
1. Determine whether total traffic volume on the major street satisfies the warrant:
Total vehicular volume entering the intersection from the major approaches is 230
veh/h < 300 veh/h. The major road traffic volume criterion is not satisfied.
2. Determine whether total traffic volume on the minor street satisfies the warrant:
Total vehicular volume entering the intersection from the minor approaches is 220
veh/h > 200 veh/h. The minor road traffic volume criterion is satisfied.
3. Determine whether crash criterion is satisfied:
Total number of crashes per year = 6 > 5. The crash criterion is satisfied.
This intersection has traffic volumes on all the approaches approximately equal,
230 veh/h for major roads and 220 veh/h for minor roads. As it can be observed
on step 2 of this problem, the minor road traffic volume criterion is satisfied.
Also, there are more than 5 crashes in a 12-month period that could be avoided
with a multiway stop control, so the crash criterion is satisfied. The installation of
a multiway stop control is supported.
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