Download or read book Vertical File Relating to the Mn/DOT Traffic Management Center written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Information packets and a few newspaper articles on Mn/DOT's Traffic Management Center, built in 1972 to monitor and manage the freeway system in the Twin Cities metro area, including its ramp meters, closed circuit TV, message signs, high occupancy vehicle facilities, traffic radio, the Highway Helper program, and traffic management research.