A device that communicates information about pedestrian timing in nonvisual format such as audible tones, verbal messages, and/or vibrating surfaces. (MUTCD)

A type of traffic control signal operation in which some or all signal phases are operated on the basis of actuation. (MUTCD)

Initiation of a change in or extension of a traffic signal phase through the operation of any type of detector. (MUTCD)

Either a light, a tone, a voice message, or both audible and visual indicators that indicate to pedestrians that the button press has been accepted.

See Accessible pedestrian signal.

Use of a sound source to provide directional orientation and alignment information.

An APS volume control that is automatically responsive to ambient (background) sound; automatic gain control.

Provision of the name of the associated street in Braille above the APS pushbutton.

See Extended button press.

Tones sounding during the pedestrian clearance interval that are differentiated from the WALK interval indicator (tones).