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.
I-88 I-294 to Mitchell Road
Feb 3, 2014
I-88 (I-294 to Mitchell Road) Congestion Scans
Congestion Scans
I-88, Reagan Memorial Tollway from I-294 to Mitchell Road Congestion Scan, 2009. Showing average speed by milepost by time of day.
I-88, Reagan Memorial Tollway from I-294 to Mitchell Road Congestion Scan, 2007. Showing average speed by milepost by time of day.
Performance Data
Non-holiday Tuesdays, Wednesdays, and Thursdays:
East-bound I-88/Reagan Memorial Tollway
Measure | 2007 | 2008 | 2009 |
---|---|---|---|
Free-Flow Travel Time (Minutes) |
21.20 | 21.02 | 23.32 |
Average AM Peak-Period Travel Time (Minutes) |
25.35 | 23.21 | 26.92 |
AM Travel Time Index | 1.20 | 1.10 | 1.15 |
Average PM Peak-Period Travel Time (Minutes) |
24.20 | 23.37 | 25.65 |
PM Travel Time Index |
1.14 |
1.11 |
1.10 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
29.77 |
26.07 |
31.83 |
AM Peak-Period |
1.40 |
1.24 |
1.36 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
29.12 |
28.68 |
29.87 |
PM Peak-Period Planning Time Index |
1.37 |
1.36 |
1.28 |
Congested Hours |
3.15 |
3.22 |
9.04 |
West-bound I-88/Reagan Memorial Tollway
Measure |
2007 |
2008 |
2009 |
---|---|---|---|
Free-Flow Travel Time (Minutes) |
20.65 |
20.92 |
22.78 |
Average AM Peak-Period Travel Time (Minutes) |
23.12 |
23.63 |
24.32 |
AM Travel Time Index |
1.12 |
1.13 |
1.07 |
Average PM Peak-Period Travel Time (Minutes) |
28.52 |
28.57 |
27.45 |
PM Travel Time Index |
1.38 |
1.37 |
1.21 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
26.19 |
25.76 |
25.82 |
AM Peak-Period |
1.27 |
1.23 |
1.13 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
38.53 |
39.14 |
36.55 |
PM Peak-Period Planning Time Index |
1.87 |
1.87 |
1.60 |
Congested Hours |
3.12 |
4.44 |
2.01 |
About the Data
Data provided by IDOT, Illinois Tollway, and HERE.
Feb 3, 2014
I-88 (I-294 to Mitchell Road) Congestion 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
I-88, Reagan Memorial Tollway from I-294 to Mitchell Road Congestion Scan, 2009. Showing average speed by milepost by time of day.
I-88, Reagan Memorial Tollway from I-294 to Mitchell Road Congestion Scan, 2007. Showing average speed by milepost by time of day.
Performance Data
Non-holiday Tuesdays, Wednesdays, and Thursdays:
East-bound I-88/Reagan Memorial Tollway
Measure | 2007 | 2008 | 2009 |
---|---|---|---|
Free-Flow Travel Time (Minutes) |
21.20 | 21.02 | 23.32 |
Average AM Peak-Period Travel Time (Minutes) |
25.35 | 23.21 | 26.92 |
AM Travel Time Index | 1.20 | 1.10 | 1.15 |
Average PM Peak-Period Travel Time (Minutes) |
24.20 | 23.37 | 25.65 |
PM Travel Time Index |
1.14 |
1.11 |
1.10 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
29.77 |
26.07 |
31.83 |
AM Peak-Period |
1.40 |
1.24 |
1.36 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
29.12 |
28.68 |
29.87 |
PM Peak-Period Planning Time Index |
1.37 |
1.36 |
1.28 |
Congested Hours |
3.15 |
3.22 |
9.04 |
West-bound I-88/Reagan Memorial Tollway
Measure |
2007 |
2008 |
2009 |
---|---|---|---|
Free-Flow Travel Time (Minutes) |
20.65 |
20.92 |
22.78 |
Average AM Peak-Period Travel Time (Minutes) |
23.12 |
23.63 |
24.32 |
AM Travel Time Index |
1.12 |
1.13 |
1.07 |
Average PM Peak-Period Travel Time (Minutes) |
28.52 |
28.57 |
27.45 |
PM Travel Time Index |
1.38 |
1.37 |
1.21 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
26.19 |
25.76 |
25.82 |
AM Peak-Period |
1.27 |
1.23 |
1.13 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
38.53 |
39.14 |
36.55 |
PM Peak-Period Planning Time Index |
1.87 |
1.87 |
1.60 |
Congested Hours |
3.12 |
4.44 |
2.01 |
About the Data
Data provided by IDOT, Illinois Tollway, and HERE.