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.
US 41 Lake Shore Drive (Monroe St to Marquette Drive)
Feb 13, 2014
US 41 Lake Shore Drive (Monroe St to Marquette Drive) Congestion and Crash Scans
Congestion Scans
US 41, Lake Shore Drive, from Monroe St to Marquette Dr. Congestion Scan, 2016. Showing average speed by milepost by time of day by direction of travel.
Note: for best viewing, in Chrome, right-click on the graphic, then open in a new tab. In other browsers, the image may be saved or downloaded as a PDF below.
Download high-resolution PDF (passenger vehicles only, as above).
Note: trucks are prohibited on Lake Shore Drive.
Note: 2016 Lake Shore Drive travel speeds were construction-impacted in the vicinity of I-55.
Crash Scan
US-41 Lake Shore Drive, Waldron Drive to 51st Street Crash Scan, 2008-12. Showing number of crash rates per 100 million vehicle miles traveled.
Performance Data
Non-holiday Tuesdays, Wednesdays, and Thursdays:
Note: Typical Lake Shore Drive speed limits are 40-45 mph; lower in certain locations
South-bound US 41/Lake Shore Drive
Measure | 2007 | 2008 | 2009 | 2010 | 2011 |
---|---|---|---|---|---|
Free-Flow Travel Time (Minutes) |
7.91 | 9.17 | 8.09 | 8.06 | 8.02 |
Average AM Peak-Period Travel Time (Minutes) |
8.22 | 9.54 | 8.59 | 9.64 | 8.70 |
AM Travel Time Index | 1.04 | 1.04 | 1.06 | 1.07 | 1.08 |
Average PM Peak-Period Travel Time (Minutes) |
10.72 | 11.70 | 9.85 | 9.53 | 9.67 |
PM Travel Time Index |
1.35 |
1.28 |
1.22 |
1.18 | 1.20 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
9.06 |
10.49 |
9.58 |
9.57 | 9.68 |
AM Peak-Period |
1.15 |
1.14 |
1.18 |
1.19 | 1.21 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
13.75 |
15.37 |
12.39 |
11.22 | 11.84 |
PM Peak-Period Planning Time Index |
1.74 |
1.68 |
1.53 |
1.39 | 1.48 |
Congested Hours |
3.76 |
3.66 |
12.09 |
13.66 | 10.18 |
North-bound US 41/Lake Shore Drive
Measure |
2007 |
2008 |
2009 |
2010 | 2011 |
---|---|---|---|---|---|
Free-Flow Travel Time (Minutes) |
7.79 |
9.03 |
7.95 |
7.95 | 8.02 |
Average AM Peak-Period Travel Time (Minutes) |
11.77 |
11.27 |
9.47 |
9.63 | 10.04 |
AM Travel Time Index |
1.51 |
1.25 |
1.19 |
1.21 | 1.25 |
Average PM Peak-Period Travel Time (Minutes) |
8.67 |
9.91 |
9.59 |
10.56 | 10.09 |
PM Travel Time Index |
1.11 |
1.10 |
1.21 |
1.33 | 1.26 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
23.87 |
18.32 |
14.32 |
13.25 | 14.19 |
AM Peak-Period |
3.06 |
2.03 |
1.80 |
1.67 | 1.77 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
9.16 |
10.91 |
12.85 |
16.63 | 14.12 |
PM Peak-Period Planning Time Index |
1.18 |
1.21 |
1.62 |
2.09 | 1.76 |
Congested Hours |
3.80 |
3.07 |
7.37 |
5.78 | 8.58 |
About the Data
.
Feb 13, 2014
US 41 Lake Shore Drive (Monroe St to Marquette Drive) 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
US 41, Lake Shore Drive, from Monroe St to Marquette Dr. Congestion Scan, 2016. Showing average speed by milepost by time of day by direction of travel.
Note: for best viewing, in Chrome, right-click on the graphic, then open in a new tab. In other browsers, the image may be saved or downloaded as a PDF below.
Download high-resolution PDF (passenger vehicles only, as above).
Note: trucks are prohibited on Lake Shore Drive.
Note: 2016 Lake Shore Drive travel speeds were construction-impacted in the vicinity of I-55.
Crash Scan
US-41 Lake Shore Drive, Waldron Drive to 51st Street Crash Scan, 2008-12. Showing number of crash rates per 100 million vehicle miles traveled.
Performance Data
Non-holiday Tuesdays, Wednesdays, and Thursdays:
Note: Typical Lake Shore Drive speed limits are 40-45 mph; lower in certain locations
South-bound US 41/Lake Shore Drive
Measure | 2007 | 2008 | 2009 | 2010 | 2011 |
---|---|---|---|---|---|
Free-Flow Travel Time (Minutes) |
7.91 | 9.17 | 8.09 | 8.06 | 8.02 |
Average AM Peak-Period Travel Time (Minutes) |
8.22 | 9.54 | 8.59 | 9.64 | 8.70 |
AM Travel Time Index | 1.04 | 1.04 | 1.06 | 1.07 | 1.08 |
Average PM Peak-Period Travel Time (Minutes) |
10.72 | 11.70 | 9.85 | 9.53 | 9.67 |
PM Travel Time Index |
1.35 |
1.28 |
1.22 |
1.18 | 1.20 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
9.06 |
10.49 |
9.58 |
9.57 | 9.68 |
AM Peak-Period |
1.15 |
1.14 |
1.18 |
1.19 | 1.21 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
13.75 |
15.37 |
12.39 |
11.22 | 11.84 |
PM Peak-Period Planning Time Index |
1.74 |
1.68 |
1.53 |
1.39 | 1.48 |
Congested Hours |
3.76 |
3.66 |
12.09 |
13.66 | 10.18 |
North-bound US 41/Lake Shore Drive
Measure |
2007 |
2008 |
2009 |
2010 | 2011 |
---|---|---|---|---|---|
Free-Flow Travel Time (Minutes) |
7.79 |
9.03 |
7.95 |
7.95 | 8.02 |
Average AM Peak-Period Travel Time (Minutes) |
11.77 |
11.27 |
9.47 |
9.63 | 10.04 |
AM Travel Time Index |
1.51 |
1.25 |
1.19 |
1.21 | 1.25 |
Average PM Peak-Period Travel Time (Minutes) |
8.67 |
9.91 |
9.59 |
10.56 | 10.09 |
PM Travel Time Index |
1.11 |
1.10 |
1.21 |
1.33 | 1.26 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
23.87 |
18.32 |
14.32 |
13.25 | 14.19 |
AM Peak-Period |
3.06 |
2.03 |
1.80 |
1.67 | 1.77 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
9.16 |
10.91 |
12.85 |
16.63 | 14.12 |
PM Peak-Period Planning Time Index |
1.18 |
1.21 |
1.62 |
2.09 | 1.76 |
Congested Hours |
3.80 |
3.07 |
7.37 |
5.78 | 8.58 |
About the Data
.