Summary The success of Accessible Pedestrian Signal (APS) installations cannot
be assured by even the most careful planning. Field adjustments are almost
always required to provide the most benefit for all users.
APS products offer a wide variety of standard and optional features, and
the technology is changing rapidly. In addition, conditions vary in the
field. Intersection and crosswalk geometry may be unusual, traffic control
equipment and associated wiring may be old and unable to be adapted as anticipated,
and site conditions, including other infrastructure on the corner, may be
challenging.
The goal of this section is to inform installers, and those who evaluate
this work, of criteria that are critical to the successful performance of
APS.
Adjustment
of installations
