RLR Crash Data and Analysis - City of Berwyn Crash Data and Analysis DISCLAIMER: The motor vehicle crash data referenced herein was provided by the Illinois Department of Transportation.

RLR Crash Data and Analysis

DISCLAIMER: The motor vehicle crash data referenced herein was provided by the Illinois Department of Transportation.

Any conclusions drawn from analysis of the aforementioned data are the sole responsibility of the data recipient(s).

Additionally, for coding years 2015 to present, the Bureau of Data Collection uses the exact latitude/longitude supplied by

the investigating law enforcement agency to locate crashes. Therefore, location data may vary in previous years

since data prior to 2015 was physically located by bureau personnel.

IL Rt. 43 (Harlem Ave) at Cermak Rd (22nd St)

<Northbound>

The table and graph below show a summary of motor vehicle crashes at the intersection of IL Rt.43 at Cermak Road over a span of 7 years. The data from 2009-2010 show the period prior to the installation of RLR cameras. The data from 2011 show the year in which the cameras were installed. The data from 2012-2015 show the period following the installation.

Turning Rear End Angle Other Sideswipe Total

2009 10 12 2 2 1 27

2010 11 2 4 6 1 24

2011 10 10 2 2 1 25

2012 14 9 4 0 0 27

2013 13 8 3 1 1 26

2014 16 11 1 3 0 31

2015 17 10 1 6 2 36

0

5

10

15

20

25

30

35

40

2009 2010 2011 2012 2013 2014 2015

Turning Rear End Angle Other Sideswipe Total

According to the Average Daily Traffic Count (ADTC) report from IDOT, Cermak Rd had 30,300 - 30,100 cars which passed through this intersection daily in 2013-14 and the traffic has stayed consistent at 30,300 - 30,100 cars daily in 2015. IL Rt. 43 (Harlem Avenue) had 29,200-33,200 cars which passed through this intersection daily in 2013-14. Those numbers have slightly increased to 30,200-31,200 cars that pass through the intersection daily. The recent Crash Data showed a slight increase year to year in the number of total accidents after the installation of the RLR camera. (27 in 2012, 26 in 2013, 31 in 2014 to 36 in 2015)

Traffic Volume

2010 The traffic numbers below were obtained from the Illinois Department of Transportation website per the RLR Guideline document published by IDOT. Only ADTC values were available, peak numbers were not provided. Harlem Ave ADTC

North of Cermak Rd is 36,300 South of Cermak Rd is 33,700

Cermak Rd ADTC

East of Harlem Ave is 26,600 West of Harlem Ave is 29,900

2013-2014 The traffic numbers below were obtained from the Illinois Department of Transportation website per the RLR Guideline document published by IDOT. Only ADTC values were available, peak numbers were not provided. Harlem Ave ADTC

North of Cermak Rd is 33,200 South of Cermak Rd is 29,200

Cermak Rd ADTC

East of Harlem Ave is 30,300 West of Harlem Ave is 30,100

2015 The traffic numbers below were obtained from the IDOT website per the RLR Guideline document published by IDOT. Only ADTC values were available, peak numbers were not provided. Harlem Ave ADTC

North: 30,200 South: 31,200

Cermak Rd ADTC

East: 30,300 West: 30,100

Summary

All processes are in compliance with the RLR regulations laid out by the Illinois Department of Transportation District 1 Bureau of Traffic Operations. The City of Berwyn received approval to install a RLR camera at the intersection of IL Rt. 43 at Cermak Rd in 2011.

Date of RLR camera implementation at Northbound: June 2011 Date at which the 1 Year Follow-Up Evaluation Report was submitted to IDOT: October

2013 There have been no Signal timing (or any other settings of Traffic Controller) changes. The intersection of IL Rt.43 at Cermak Rd is one of the busiest and most dangerous intersections in Berwyn. Since the installation of the RLR camera at this intersection, total crashes have been trending slightly up (25 in 2011 -> 27 in 2012 -> 26 in 2013 -> 31 in 2014 -> 36 in 2015). There has also been a slight increase in the Average Daily Traffic Count (ADTC) over the monitored 7 year span. The small upward trend of collisions after installation of the RLR camera were closely monitored and the City of Berwyn applied and received approval from IDOT to install an additional RLR camera at the westbound approach of IL Rt.43 at Cermak Rd in April 2015. Due to the small sample size of data after the recent addition of the new RLR camera at the westbound approach, we are not able to accurately access and come to a definite conclusion for the impact of the RLR cameras at IL Rt.43 at Cermak Rd at this time.