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10-Aug-2019 07:41

Angle crashes are most likely to result in serious injury or fatalities.

The likelihood of serious injury or fatality in a right angle crash is increased when the red-light running vehicle is also speeding.

The City reviews crash data, paying particular attention to the number of "right-angle crashes" at these intersections--indicative of accidents caused when one vehicle runs a red light and strikes another.

Only locations with a high number of right-angle crashes are chosen for red-light cameras.

Chicago's yellow lights are set at 3 seconds on streets where the approach speed limit is 30 mph or lower, 4 seconds on streets where the approach speed limit is 35 mph or higher.

These timings fall within the guidelines of the Federal Highway Administration’s Manual on Uniform Traffic Control Devices, and adheres to recommendations by the Institute of Transportation Engineers.

In 2009, IDOT changed its reporting methodology for certain crash types to include only crashes resulting in

Angle crashes are most likely to result in serious injury or fatalities.The likelihood of serious injury or fatality in a right angle crash is increased when the red-light running vehicle is also speeding.The City reviews crash data, paying particular attention to the number of "right-angle crashes" at these intersections--indicative of accidents caused when one vehicle runs a red light and strikes another.

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Angle crashes are most likely to result in serious injury or fatalities.

The likelihood of serious injury or fatality in a right angle crash is increased when the red-light running vehicle is also speeding.

The City reviews crash data, paying particular attention to the number of "right-angle crashes" at these intersections--indicative of accidents caused when one vehicle runs a red light and strikes another.

Only locations with a high number of right-angle crashes are chosen for red-light cameras.

Chicago's yellow lights are set at 3 seconds on streets where the approach speed limit is 30 mph or lower, 4 seconds on streets where the approach speed limit is 35 mph or higher.

These timings fall within the guidelines of the Federal Highway Administration’s Manual on Uniform Traffic Control Devices, and adheres to recommendations by the Institute of Transportation Engineers.

In 2009, IDOT changed its reporting methodology for certain crash types to include only crashes resulting in $1,500 or more in property damage (increased from $500); this may have an effect on the comparison of total, right-angle and rear-end crashes reported, but does not affect the comparison of crashes involving pedestrians or resulting in injury.

,500 or more in property damage (increased from 0); this may have an effect on the comparison of total, right-angle and rear-end crashes reported, but does not affect the comparison of crashes involving pedestrians or resulting in injury.

Intersections are chosen for Red Light Cameras based on the crashes experienced at the intersection.The digital cameras are tied into the traffic signal system and use radar to detect vehicles approaching the intersection.When the cameras record vehicles entering the intersection after the light turns red, they take still and video pictures of the rear of a vehicle, including the license plate.No signal timings were changed before or after the implementation of red-light cameras.

Changing signal timings will not solve the problem of drivers running red lights.

Chicago began its red light camera program 2003 with enforcement at two intersections: Peterson and Western and 55th and Western.