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by CuriousCosmic 661 days ago
Not every crosswalk. This is explictly only for signaled intersections/crosswalks. i.e. those that already have a pushbutton, a walk sign, and a stoplight.

That only covers a very small portion of crosswalks and is generally done for crosswalks in high throughput areas or areas where risks of a pedestrian/vehicle collision are high. i.e. the places where you'd want additional augmentation to notify drivers and prevent collisions