The Use of C.B. Radio in Traffic Management

This report presents an evaluation of the use of citizen's band (C.B.) radio in the I-35W traffic management system. The I-35W system, which extends along a 17 mile section of freeway south of downtown Minneapolis, has been in operation since April, 1974. This system includes ramp control signals, bypass ramps for high occupancy vehicles, a closed circuit television (CCTV) network, a motorist information program, and an incident detection and response program. Operation of the system is computer coordinated from the Traffic Management Center (TMC) near downtown Minneapolis. A listing of reports which document the design details, system hardware and software, and system evaluation is presented in the Appendix.