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The three-county area served by SEMSIM includes more than 15,000 miles of public roads
The four SEMSIM partner agencies have a collective winter maintenance fleet of more than 500 vehicles
The population of the three counties, including the City of Detroit, is approximately 4.2 million
This represents 40 percent of the state’s population
There are more than 3.4 million vehicles registered in the three counties
In 1997, these three counties, including the City of Detroit, accounted for nearly 3.4 billion vehicle miles traveled
The SEMSIM region has the busiest freeways, roads and streets in the state
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