Mn/DOT (Minnesota Department of Transportation) activated a traffic management system on a three mile section of I-694 in August 1980. System elements include vehicle detectors, ramp control signals, a changeable message sign, and monitor and display devices.
Evaluation of this system was complicated by a reconstruction project on I-694. Study results showed that there were improvements in traffic flow and accident experience even though peak period volumes increased substantially. These improvements are attributed to the combined effects of the traffic management system and the reconstruction project.
Despite the improvements, there is a need for additional capacity in the I-694 corridor, and projects intended to accomplish this are briefly described.
