The indication of the Walk interval is the most critical information provided by the APS. There are a number of APS available and different devices and WALK indications may be needed for different situations. This section provides information about the considerations in choosing WALK indications, characteristics of different types of WALK indications, and recommended usage that may assist in choosing the appropriate WALK indication. A discussion of WALK indication volume, the use of audible beaconing, and suggested criteria for audible beaconing are included.
APS technology is changing rapidly and additional choices or features may become available. Those making purchasing decisions should consider the background information provided here which will be helpful in evaluating new technology.
Locations of WALK indications
Methods of providing WALK indications
Volume of WALK indication
Use of audible beaconing
The other features of the device chosen can also affect the usability of the APS and the pedestrians' understanding of the WALK indication. Various features and their use are explained in detail in Other Features.
Poor installation can result in ambiguous WALK information from any APS. Additional information on installation is provided in Designing Installations and New Construction or Reconstruction.
The Matrix identifies WALK indications and features currently available on different manufacturer's devices.
APS indication of the Walk interval:
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This site was developed under the sponsorship of the National Cooperative Highway Research Program.