Yield Street Road Sign Symbol Caution Traffic Standard Apron

A driver who stops has yielded his right of way to another. In contrast, a stop sign always requires a complete stop. The first yield sign was installed in Tulsa, Oklahoma, having been devised and designed by Tulsan police officer Clinton Riggs. Riggs invented only the sign, not the rule, which was already in place.[citation needed] Despite Oklahoma being landlocked, it is sometimes suggested[by whom?] the rule was made by analogy to the International Regulations for Preventing Collisions at Sea. Particular laws regarding installation and compliance with yield or give-way signs vary by jurisdiction. In the Federal Highway Administration's Manual on Uniform Traffic Control Devices, a yield sign may be warranted: 1. On the approaches to a through street or highway where conditions are such that a stop is not always required. 2. At the second crossroad of a divided highway, where the median width at the intersection is 9 m or greater. In this case, a stop or yield sign may be installed at the entrance to the first roadway of a divided highway, and a yield sign may be installed at the entrance to the second roadway. 3. On a channelised turn lane that is separated from the adjacent travel lanes by an island, even if the adjacent lanes at the intersection are controlled by a highway traffic control signal or by a stop sign. 4. At an intersection where a special problem exists and where engineering judgment indicates the problem to be susceptible to correction by the use of the yield sign. 5. Facing the entering roadway for a merge-type movement if engineering judgment indicates that control is needed because acceleration geometry and/or sight distance is not adequate for merging traffic operation. In many states traffic is allowed to turn right on a red light providing they first stop and must still then yield.