walkinginfo.org Logo Go to contents of page
APS home go to front of Accessible Pedestrian Signals
Go to Front page Background section Travel by Blind
Rules & Regulations
Technologies and Features section Types
Walk Indications
Other Features
Choosing and Installing section Where to Install
Designing Installations
New Construction or Reconstruction
Retrofitting an Intersection with an APS
Installation Specifications
Field Adjustments
State of Practices section Case Studies
International Practice
Devices section Manufacturers
Selection Tool
Product Matrix
Downloads section Full Guide
Rating Scales
Field Adjustments

Location of Walk Indications

Separation of sound sources
Ambiguity can be addressed by careful location of signal sounds. The best solution is location of the speakers precisely beside or above the end of associated crosswalks, and at least 3 m (10 ft) from another APS on the same corner, so it is clear from the source of the sound which crosswalk is being signaled.
Ideal placement for pushbutton-integrated APS.

Speech messages, if sound sources cannot be separated
If the APS must be located with two pushbuttons on the same pole or in locations that are not separated by at least 3m (10 ft), one alternative recommended by PROWAAC is that APS have speech messages. To provide unambiguous information such APS require:
  • A tactile arrow aligned with the associated crosswalk;
  • A pushbutton message available during the flashing and steady DON'T WALK, that identifies the intersection and the crosswalk associated with that pushbutton; and
  • A WALK message that includes the name of the street being signaled at the onset of the Walk interval. (Otherwise the speech message is not useful to those unfamiliar with the area.)
Possible additional solutions
Further developments in technology which may provide clarification of which crosswalk is being signaled, may include
  • Alternating the WALK signal from one end of the crosswalk to the other
  • Having the WALK signal come from the far end of the crosswalk only
  • Developments in handheld receivers

  << previous page  |  next page >>
spacer image
This site was developed under the sponsorship of the National Cooperative Highway Research Program.