Hello again, WSMAC,
Local architect and Discover Downtown Westbrook Design Committee member
Jill Johanning recently followed up with her DOT ADA contact on a question
we had about pedestrian request buttons. It was mentioned in the DOT plans
for the William Clark Drive project this summer that the push button
"maximum allowable reach distance" shall be 24" (Sheet 10, "Pedestrian
Signals and Push Buttons", #7
Our first question was, what does "maximum allowable reach distance" mean?
It is the length you have to reach to get the button. In this diagram from
ADA guidelines, it is the measurement at the bottom, recommended to be 255
mm max, or 10".
Since the DOT plan says 24" instead of 10", the DOT ADA contact that Jill
spoke to promised she would have it changed to 10" in the project plan.
I'll note this in our WCD Project Notes Document
Jill included a link to this "Public Rights Of Way Guidelines
<https://www.access-board.gov/prowag/>" (PROWAG) document from the federal
government, which includes lots of information about recommended dimensions
of pedestrian infrastructure in Sections 3 and 4, Technical Requirements.
Cyclist, Cycling Educator, Technologist