Managing congestion improves quality of life, safety, and air quality. The majority of roadway travel in the state occurs in the Minnesota Department of Transportation's Metro District, which represents just 13 percent of the state's roadway miles.
Congestion is measured by the percentage of Twin Cities freeway miles on which the speed of traffic is less than 45 miles per hour during weekday peak periods. This is reported annually in the Metropolitan Freeway System Congestion Report.
This document (.xlsx) provides the indicator data in table format.