There are plenty of intersections where a walk signal comes on automatically, why do some intersections require a button push to initiate the walk signal when it doesn’t seem to make a difference in light timing or duration?
In: Engineering
It depends on location, in areas with high traffic, the button does actually trigger a shorter timeout to force the lights to change. This is the case here in the San Jose metro area. I have heard that similar buttons in SF do nothing to affect timing, but instead they produce audible feedback for the visually impaired to let them know whether it is safe to cross.
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