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I-88 (I-294 to I-355)

Graphics

I-88, Reagan Memorial Tollway from I-294 to I-355 Congestion Scan - 2011, showing average speed by milepost by time of day. Click on graphic to open congestion scan.

I-88, Reagan Memorial Tollway from I-294 to I-355 Congestion Scan - 2011 (click for pdf version)

Performance Data

Non-holiday Tuesdays, Wednesdays, and Thursdays:

East-bound I-88/Reagan Memorial Tollway

Measure 2010 2011
Free-Flow Travel Time
(Minutes)
8.62 8.63
Average AM Peak-Period
Travel Time (Minutes)
10.38 10.32
AM Travel Time Index 1.20 1.20
Average PM Peak-Period
Travel Time (Minutes)
9.60 9.18
PM Travel Time Index

1.11

1.06
AM Peak-Period
95th Percentile Travel Time
(Minutes)

14.83

14.24

AM Peak-Period
Planning Time Index

1.72

1.65
PM Peak-Period
95th Percentile Travel Time
(Minutes)

13..22

9.78
PM Peak-Period
Planning Time Index

1.53

1.13
Congested Hours

2.27

1.39

 

West-bound I-88/Reagan Memorial Tollway

Measure

2010

2011
Free-Flow Travel Time
(Minutes)

8.31

8.40
Average AM Peak-Period
Travel Time (Minutes)

8.68

9.09
AM Travel Time Index

1.05

1.08
Average PM Peak-Period
Travel Time (Minutes)

8.99

9.37
PM Travel Time Index

1.08

1.11
AM Peak-Period
95th Percentile Travel Time
(Minutes)

9.12

9.63

AM Peak-Period
Planning Time Index

1.10

1.15
PM Peak-Period
95th Percentile Travel Time
(Minutes)

10.53

11.52
PM Peak-Period
Planning Time Index

1.27

1.37
Congested Hours

0.46

0.71
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