Module A - Slide 16


The revisions to the MUTCD in 2009 made a number of changes to specifications for APS. Basically the changes in specifications call for APS that are integrated into the pushbutton. Both audible and vibrotactile indications are required. In addition, the standard walk indication is supposed to be a rapid tick, with speech walk messages used only in specific situations, where the two pushbuttons can’t be separated on a corner. We’ll talk more about the details of the specifications later in the course.

Note that the MUTCD doesn’t have specific compliance dates on APS. APS that meet the new specifications are required when installing new devices and when replacing current devices.