Illinois Department of Transportation, Ann L. Schneider, Secretary
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ILLINOIS HIGHWAY STATISTICS SHEET

The Illinois Department of Transportation (IDOT) annually publishes detailed traffic information based on a statewide traffic count program. Counts from this program range in duration from continuously recorded data at permanent count stations to thousands of 24-hour counts at locations throughout the state.

Average Daily Traffic (ADT) volumes and truck volumes for specific locations are available on the Average Daily Traffic Counts GIS application

The Illinois Highway Statistics Sheet contains statewide mileage and VMT summary information by functional class and road system. Statewide totals as well as subtotals for the nine individual IDOT Highway Districts are displayed. Summary information about structures is also included.

2012 Illinois Highway Statistics Sheet

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