Chicago Traffic Crashes

Cell phone use
Texting
In-vehicle distraction
Outside vehicle distraction
Other electronic device

Exceeding authorized speed limit
Exceeding safe speed for conditions
Failing to reduce speed to avoid crash

Disregarding traffic signals
Disregarding stop sign
Disregarding yield sign
Disregarding road markings
Disregarding other traffic signs
Turning right on red
Passing stopped school bus

Under influence of alcohol/drugs (arrest)
Had been drinking (no arrest)
Physical condition of driver

Failing to yield right-of-way
Improper lane usage
Improper overtaking/passing
Improper turning/no signal
Following too closely
Driving on wrong side/wrong way
Improper backing

Weather
Vision obscured
Road construction/maintenance
Road engineering/surface defects
Animal
Evasive action (animal, object, nonmotorist)

Equipment — vehicle condition
Driving skills/knowledge/experience
Erratic, reckless, or aggressive operation
Bicycle advancing legally on red
Motorcycle advancing legally on red

Unable to determine
Not applicable
Obstructed crosswalks
Related to bus stop