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I-90/94 Kennedy Expy Local Lanes (I-94 Edens Split to I-290) 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.

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.  

Graphics

I-90/94, Kennedy Expressway Local Lanes from I-290 to I-94 Edens Expressway Congestion Scan, 2011. Showing average speed by milepost by time of day.  

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I-90/94, Kennedy Expressway Local Lanes from I-290 to I-94 Edens Expressway Congestion Scan, 2011. Showing average speed by milepost by time of day.  

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I-90/94, Kennedy Expressway Local Lanes from I-290 to I-94 Edens Expressway Congestion Scan, 2011. Showing average speed by milepost by time of day.  

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Crash Scan

I90/94 Kennedy Expressway Crash Scan, 2008-12. Showing number of crash rates per 100 million vehicle miles traveled

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Performance Data

Non-holiday Tuesdays, Wednesdays, and Thursdays:

East-bound I-90/94 Kennedy Expressway Local Lanes

Measure 2007 2008 2009 2010 2011
Free-Flow Travel Time (Minutes) 7.88 8.01 8.01 8.34 8.38
Average AM Peak-Period Travel Time (Minutes) 17.94 18.16 23.19 18.24 19.76
AM Travel Time Index 2.28 2.27 2.89 2.19 2.36
Average PM Peak-Period Travel Time (Minutes) 14.25 18.16 16.13 17.18 17.24
PM Travel Time Index 1.81 2.27 2.01 2.06 2.06
AM Peak-Period 95th Percentile Travel Time (Minutes) 32.60 33.32 43.62 34.80 35.02
AM Peak-Period Planning Time Index 4.14 4.16 5.44 4.17 4.18
PM Peak-Period 95th Percentile Travel Time (Minutes) 24.98 33.30 29.64 27.90 29.02
PM Peak-Period Planning Time Index 3.17 4.16 3.70 3.35 3.46
Congested Hours 12.10 12.43 12.78 12.84 12.58

West-bound I-90/94 Kennedy Expressway Local Lanes

Measure 2007 2008 2009 2010 2011
Free-Flow Travel Time (Minutes) 8.08 8.25 8.24 8.29 8.25
Average AM Peak-Period Travel Time (Minutes) 18.64 16.65 16.49 18.45 17.60
AM Travel Time Index 2.31 2.02 2.00 2.22 2.13
Average PM Peak-Period Travel Time (Minutes) 20.28 20.88 15.41 17.66 16.67
PM Travel Time Index 2.51 2.53 1.87 2.13 2.02
AM Peak-Period 95th Percentile Travel Time (Minutes) 38.64 32.02 36.14 39.97 36.49
AM Peak-Period Planning Time Index 4.78 3.88 4.38 4.82 4.42
PM Peak-Period 95th Percentile Travel Time (Minutes) 38.90 44.57 30.52 35.32 30.73
PM Peak-Period Planning Time Index 4.81 5.40 3.70 4.26 3.72
Congested Hours 11.12 12.35  9.77 10.65 10.98

 

About the Data

Data provided by IDOT, Illinois Tollway, and HERE. 

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