Colorado DOT deployed a truck speed warning system in Glenwood Canyon at a cost ranging from $25,000 to $30,000.
From the Rural ITS Toolbox report: Subsection 7.1 Speed Warning Systems (Truck Speed Warning System)
Author: Deeter, D., H. M. Zarean, and D. Register
Published By: U.S. DOT Federal Highway Administration
Source Date: November 2001
EDL Number: 13477
Other Reference Number: FHWA-OP-01-030URL: http://ntl.bts.gov/lib/jpodocs/repts_te/13477.html
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