Accessible Pedestrian Signal

A traffic control device that communicates pedestrian signal information in non-visual formats, typically through audible tones, speech messages, or vibrating surfaces, enabling blind and visually impaired pedestrians to know when it is safe to cross a street and in which direction. Modern accessible pedestrian signals may include locator tones to help pedestrians find the push button, tactile arrows indicating the crossing direction, vibrotactile feedback on the push button during the walk interval, and audible or speech walk indicators. APS are essential infrastructure for independent mobility of blind pedestrians and are increasingly required by accessibility standards and regulations.