Because the STOP sign causes a substantial inconvenience to motorists, it should be used only where warranted. STOP signs should be used if engineering judgment indicates that one or more of the following conditions exist:
- Intersection of a less important road with a main road where application of the normal right-of-way rule would not be expected to provide reasonable compliance with the law;
- Street entering a through highway or street;
- Unsignalized intersection in a signalized area; and/or
- High speeds, restricted view, or crash records indicate a need for control by the STOP sign.Intersection of a less important road with a main road where application of the normal right-of-way rule is unduly hazardous.
Furthermore, stop signs should not be used for speed control and should be installed in a manner that minimizes the numbers of vehicles having to stop.
Multiway stop control can be useful as a safety measure at intersections if certain traffic conditions exist. Safety concerns associated with multiway stops include pedestrians, bicyclists, and all road users expecting other road users to stop. Multiway stop control is used where the volume of traffic on the intersecting roads is approximately equal.
Appropriate use of multiway stop control include:
- Where traffic control signals are justified, the multiway stop is an interim measure that can be installed quickly to control traffic while arrangements are being made for the installation of the traffic control signal.
- A crash problem, as indicated by 5 or more reported crashes in a 12-month period that are susceptible to correction by a multiway stop installation. Such crashes include right- and left-turn collisions as well as right-angle collisions.
- Where appropriate minimum traffic volume conditions exist.