Case Study-Milwaukee Monitor

MONITOR is the Wisconsin DOT's freeway traffic management system for metro Milwaukee. MONITOR was implemented to address congestion problems on and incident vulnerability of the region's incomplete freeway system. MONITOR uses vehicle detectors, CCTV, traffic responsive ramp metering with high occupancy vehicle (HOV) priority, freeway and arterial variable message signs, and highway advisory radio.

A full-time liaison from the county's Sheriff's department in the TMC provides coordination with law enforcement. The TMC also centralizes and disseminates road closure information.

In 1999, Wisconsin DOT reported the following benefits as a result of MONITOR's systems:

  • 14.8% reduction in crashes

  • Travel time reductions of 9%, 12%, and 16% on three separate roadway segments

  • During AM peak period, increase of 22% in volume and 3% in average speed

  • Net savings of 1,454 driver hours per peak hour as a result of ramp metering alone

map monitor of Milwaukee


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