I-90/94 Dan Ryan Expressway (I-290 to I-90 Skyway Local Lanes) Congestion and Crash Scans
The Chicago region traffic congestion scans were created by averaging five minute speed data obtained from freeway loop detectors, radar, and mobile technology data. The traffic scans display average speed on a freeway corridor as a function of time of day (the x-axis) and location (the y-axis) along a freeway corridor. Congestion scans are not available on this section of the Dan Ryan because of data issues. A new source of data is being adapted to provide future congestion scans. This new data source will facilitate congestion scans system-wide, including for the Dan Ryan Expressway.
I90/I94 Kennedy, Local Lanes I-290 to I-90 Skyway Crash Scan, 2008-12. Showing number of crash rates per 100 million vehicle miles traveled.
About the Data
Data provided by IDOT, Illinois Tollway, and HERE.