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 (Hollywood Avenue to Monroe St
Feb 13, 2014
US 41 Lake Shore Drive (Hollywood Avenue to Monroe Street) Congestion and Crash Scans
Congestion Scans
US 41, Lake Shore Drive, from Hollywood to Monroe. 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, as above)
Note: Trucks are not permitted on Lake Shore Drive.
Crash Scan
US 41 Lake Shore Drive, Bryn Mawr Avenue to Chicago Avenue Crash Scan, 2008-12. Showing number of crash rates per 100 million vehicle miles traveled.
Performance Data
Non-holiday Tuesdays, Wednesdays, and Thursdays:
Note: Lake Shore Drive speed limits are typically 40 to 45 mph, lower in some locations.
South-bound US 41/Lake Shore Drive
Measure | 2007 | 2008 | 2009 | 2010 | 2011 |
---|---|---|---|---|---|
Free-Flow Travel Time (Minutes) |
8.45 | 8.45 | 8.36 | 8.62 | 8.63 |
Average AM Peak-Period Travel Time (Minutes) |
14.39 | 12.80 | 12.68 | 12.80 | 12.99 |
AM Travel Time Index | 1.70 | 1.51 | 1.52 | 1.48 | 1.51 |
Average PM Peak-Period Travel Time (Minutes) |
10.96 | 10.92 | 10.68 | 10.65 | 10.78 |
PM Travel Time Index |
1.30 |
1.29 |
1.28 |
1.24 | 1.25 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
30.55 |
28.34 |
27.88 |
25.44 | 28.11 |
AM Peak-Period |
3.62 |
3.35 |
3.33 |
2.95 | 3.26 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
17.50 |
15.99 |
15.74 |
15.36 | 15.10 |
PM Peak-Period Planning Time Index |
2.07 |
1.89 |
1.88 |
1.78 | 1.75 |
Congested Hours |
6.33 |
5.66 |
4.96 |
4.67 | 4.94 |
North-bound US 41/Lake Shore Drive
Measure |
2007 |
2008 |
2009 |
2010 | 2011 |
---|---|---|---|---|---|
Free-Flow Travel Time (Minutes) |
8.38 |
8.30 |
8.21 |
8.38 | 8.34 |
Average AM Peak-Period Travel Time (Minutes) |
8.88 |
8.81 |
8.29 |
8.63 | 8.79 |
AM Travel Time Index |
1.06 |
1.06 |
1.01 |
1.03 | 1.05 |
Average PM Peak-Period Travel Time (Minutes) |
14.42 |
13.85 |
12.64 |
12.55 | 12.52 |
PM Travel Time Index |
1.72 |
1.67 |
1.54 |
1.50 | 1.50 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
10.05 |
10.29 |
9.20 |
9.52 | 9.70 |
AM Peak-Period |
1.20 |
1.24 |
1.12 |
1.14 | 1.16 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
26.60 |
25.89 |
22.35 |
22.07 | 21.52 |
PM Peak-Period Planning Time Index |
3.18 |
3.12 |
2.72 |
2.63 | 2.58 |
Congested Hours |
4.63 |
5.84 |
4.70 |
3.43 | 3.50 |
About the Data
Feb 13, 2014
US 41 Lake Shore Drive (Hollywood Avenue to Monroe Street) 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 Hollywood to Monroe. 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, as above)
Note: Trucks are not permitted on Lake Shore Drive.
Crash Scan
US 41 Lake Shore Drive, Bryn Mawr Avenue to Chicago Avenue Crash Scan, 2008-12. Showing number of crash rates per 100 million vehicle miles traveled.
Performance Data
Non-holiday Tuesdays, Wednesdays, and Thursdays:
Note: Lake Shore Drive speed limits are typically 40 to 45 mph, lower in some locations.
South-bound US 41/Lake Shore Drive
Measure | 2007 | 2008 | 2009 | 2010 | 2011 |
---|---|---|---|---|---|
Free-Flow Travel Time (Minutes) |
8.45 | 8.45 | 8.36 | 8.62 | 8.63 |
Average AM Peak-Period Travel Time (Minutes) |
14.39 | 12.80 | 12.68 | 12.80 | 12.99 |
AM Travel Time Index | 1.70 | 1.51 | 1.52 | 1.48 | 1.51 |
Average PM Peak-Period Travel Time (Minutes) |
10.96 | 10.92 | 10.68 | 10.65 | 10.78 |
PM Travel Time Index |
1.30 |
1.29 |
1.28 |
1.24 | 1.25 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
30.55 |
28.34 |
27.88 |
25.44 | 28.11 |
AM Peak-Period |
3.62 |
3.35 |
3.33 |
2.95 | 3.26 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
17.50 |
15.99 |
15.74 |
15.36 | 15.10 |
PM Peak-Period Planning Time Index |
2.07 |
1.89 |
1.88 |
1.78 | 1.75 |
Congested Hours |
6.33 |
5.66 |
4.96 |
4.67 | 4.94 |
North-bound US 41/Lake Shore Drive
Measure |
2007 |
2008 |
2009 |
2010 | 2011 |
---|---|---|---|---|---|
Free-Flow Travel Time (Minutes) |
8.38 |
8.30 |
8.21 |
8.38 | 8.34 |
Average AM Peak-Period Travel Time (Minutes) |
8.88 |
8.81 |
8.29 |
8.63 | 8.79 |
AM Travel Time Index |
1.06 |
1.06 |
1.01 |
1.03 | 1.05 |
Average PM Peak-Period Travel Time (Minutes) |
14.42 |
13.85 |
12.64 |
12.55 | 12.52 |
PM Travel Time Index |
1.72 |
1.67 |
1.54 |
1.50 | 1.50 |
AM Peak-Period 95th Percentile Travel Time (Minutes) |
10.05 |
10.29 |
9.20 |
9.52 | 9.70 |
AM Peak-Period |
1.20 |
1.24 |
1.12 |
1.14 | 1.16 |
PM Peak-Period 95th Percentile Travel Time (Minutes) |
26.60 |
25.89 |
22.35 |
22.07 | 21.52 |
PM Peak-Period Planning Time Index |
3.18 |
3.12 |
2.72 |
2.63 | 2.58 |
Congested Hours |
4.63 |
5.84 |
4.70 |
3.43 | 3.50 |