Quote:
Originally Posted by Keith P.
I wonder what the original rationale for the buttons was? Walk signals always used to be synched with green traffic lights but turned red some number of seconds ion advance of the light changing to yellow/red in order to give pedestrians time to finish crossing.
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...and driver's, a little advance notice that the light was going to change to yellow.
It used to be called a "stale green light" when the walk signal had switched to yield.