By using ITS, we'll maximize the use of our existing road system. A vehicle on the shoulder of the road reduces the capacity of the closest lane by 20 percent. Approximately 60 percent of congestion is caused by incidents. ITS is made up of many components that, when combined, serve as a powerful weapon at fighting traffic congestion. Fiber-optic cables communicate information between monitoring devices and the MoDOT Traffic Operations Center.
Sensors provide information on average traffic speed and volume.
Closed-circuit cameras at major interchanges, intersections and river bridge crossings provide live video information on traffic flow. Permanent mounted variable message signs inform motorists of incidents ahead and supply alternate route options. Highway Advisory Radio signs equipped with lights that flash when there is new traffic information. Improved highway milemarkers identify exactly where a motorist is to accurately pinpoint the location of incidents. In Kansas City and St. Louis, Motorist Assist helps stranded motorists to get their vehicles out of traffic lanes and, if possible, running again.