At least one manufacturer offers the option of a handheld pushbutton that sends a message to the APS to call the pedestrian phase. It operates on a limited range radio frequency (such as a garage door opener or car door unlocking device) within 100 feet.
Manufacturer's information does not clarify how the device would differentiate between locations at the intersection, or if using the device would place a pedestrian call for all crossings of the intersection.
Not mentioned in MUTCD or proposed PROWAG.
How used by pedestrians who are blind or who have low vision
Pedestrians could place a pedestrian call as they approach the intersection, without having to travel to the pushbutton location. This would make it unnecessary to deviate from the travel path and may be particularly advantageous for wheelchair users.
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