Variable Message Board
Video monitoring and variable message boards allow maintenance personnel to monitor and control traffic inside the tunnel.
https://www.codot.gov/travel/ejmt/photo-tour/Wrecker_Run.jpg/view
https://www.codot.gov/travel/ejmt/photo-tour/Wrecker_Run.jpg/@@download/image/Wrecker_Run.jpg
Variable Message Board
Video monitoring and variable message boards allow maintenance personnel to monitor and control traffic inside the tunnel.
