I-94 Dan Ryan Expressway (I-90 Chicago Skyway to I-57)
Crash scans show the rate of total highway crashes per 100 million vehicle-miles traveled (VMT) for 1/10 mile segments. The purpose of these crash scans is to show highway planners and system managers how crashes are related to congestion. Understanding where crashes are concentrated can help planners and engineers focus on improving those locations with the worst performance.
Congestion scans were created by averaging five-minute speed data obtained from mobile technology data. The congestion scans display average speed by milepost by time of day by direction of travel.
I-94 Dan Ryan Expressway from I-90 Chicago Skyway to I-57. Congestion Scan, 2016. Showing average speed by milepost by time of day by direction of travel.
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I-94 Dan Ryan Expressway, I-90 Skyway to I-57 Crash Scan, 2008-12. Showing number of crash rates per 100 million vehicle miles traveled.
2008 - 2011 highway perfromance measures are not available at this time due to data issues.
About the Data
Notice: 2016 congestion scans are based upon work supported by the Federal Highway Administration under contract number DTFH-13-C-00012. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not reflect the views of the Federal Highway Administration.