Skip to main content

Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

Agency Alert

Welcome to the new IDOT home page.  Our location has changed, please update any bookmarks.

Illinois Travel Statistics

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 Travel Statistics booklet contains a variety of current and historical traffic information. Vehicle Miles of Travel (VMT) data is summarized by IDOT highway district, county, functional class, road system, and urbanized area. While statewide travel history dates back to 1950, individual county VMT subtotals have been tabulated for the last five years. Charts displaying monthly, daily, and hourly traffic patterns are also included.