Chicago processes millions of vehicle trips every day across a road network that mixes highway interchanges, six-way intersections, and some of the most densely traveled surface streets in the Midwest. Not all intersections are created equal. A handful of them produce crashes at rates far higher than the city average, year after year.
Chicago’s annual crash data shows that the same intersections show up repeatedly at the top of the list — and most of the crashes there share common causes that drivers can actually do something about. Here is what the data shows and what to know before you drive through any of them.
Which Intersections See the Most Crashes
The intersection of E. 79th Street and S. Stony Island Avenue on Chicago’s South Side has appeared consistently among the city’s most dangerous, driven by a six-way configuration, heavy bus traffic from multiple routes, and nearby Skyway ramp connections that funnel high-speed traffic onto a surface street grid. The Chicago Data Portal records dozens of crashes at this location in most years.
Other intersections that appear regularly in high-crash analyses include:
- W. Chicago Avenue & N. Cicero Avenue — heavy cross-street volumes and a history of left-turn conflicts
- S. Western Avenue & W. 87th Street — two of the South Side’s busiest arterials meeting at a high-speed crossing
- N. Milwaukee Avenue intersections in Logan Square — diagonal arterial creates unusual angles that increase blind-spot risk
- E. 95th Street & S. Stony Island Avenue — another South Side corridor with heavy bus and pedestrian activity
What these intersections share: high daily traffic volumes, multiple turning movements, pedestrian and bus activity competing for the same space, and in several cases geometry that makes sightlines difficult.
Why Intersection Crashes Happen (and Who Is Usually at Fault)
Left-turn movements are a leading cause of serious intersection crashes in Chicago. Chicago Department of Transportation data shows that between 2017 and 2021, left-turning drivers were involved in 40% of crashes where a pedestrian was seriously injured or killed at an intersection. The physics are straightforward: a driver turning left crosses oncoming lanes, has limited reaction time, and is often misjudging the speed of approaching vehicles.
Other common causes at Chicago’s high-crash intersections:
- Running red lights — particularly common at intersections where yellow light timing is short
- Distracted driving at the moment of a required decision — slowing, stopping, or yielding
- Failure to yield to pedestrians in crosswalks, especially at multi-leg intersections
- Speeding on approach, which reduces stopping distance to well below what drivers expect
How to Navigate High-Risk Intersections More Safely
Changing how you drive through complex intersections reduces risk substantially. These are specific behaviors, not general reminders to “be careful”:
Before reaching the intersection: reduce speed by 10–15% compared to the posted limit when approaching a multi-leg or high-volume intersection, especially one where the signal timing is unfamiliar. This gives an extra second of reaction time.
On left turns: wait until there is a clear, confirmed gap in oncoming traffic — not just a perceived gap. At unprotected left-turn signals, the last second of a yellow light is the highest-risk moment because oncoming drivers may also be trying to clear the intersection. Two seconds of clear road is not enough at city speeds.
On green lights: look left-right-left before committing through the intersection, even on green. In the US, cross traffic from the left reaches you first, so that is where a red-light runner is most likely to appear. The check adds roughly one second.
- Avoid the left lane on multi-lane arterials approaching a complex intersection — merging and turning conflicts cluster there
- At six-way intersections, track the pedestrian signal as a secondary timing cue for cross-traffic
- At night, assume pedestrians may be present at crosswalks even if not visible
What to Do If a Crash Happens at One of These Intersections
High-traffic intersections usually have surveillance cameras — from the city’s own network, from nearby businesses, and from traffic signal equipment. That footage can be critical in establishing what happened and who had the right of way. It is often overwritten within 30 to 90 days.
If you are involved in a crash at a Chicago intersection: call 911, stay at the scene, and photograph everything before any vehicle moves. Note the signal phase if you can — whether the light was green, red, or turning — and identify any witnesses. The official police report will form the foundation of any subsequent insurance or legal process, and intersections with a documented crash history can matter in how fault is evaluated.
Chicago’s intersection crash patterns have been studied extensively, and that data is publicly accessible through the city’s open data portal. Anyone curious about a specific intersection before driving it regularly can look up its crash history there.
Final Thoughts on Driving Chicago’s Busiest Intersections
Most serious crashes at Chicago intersections come down to a few moments: a left turn across oncoming traffic, a glance at a phone, or a driver pushing through a late yellow light. Slowing on approach, checking cross traffic before you go and keeping the phone out of reach remove much of that risk. If a crash does happen, the evidence gathered in the first hour matters more than anything done later. The Weekly Driver has more guides on defensive driving and what to do after a crash for drivers who want to keep sharpening their habits.
Matthew Wilde
Matthew Wilde is an automotive journalist with experience contributing to leading publications. He focuses on delivering clear, well-researched analysis of automotive industry news and vehicles. Growing up surrounded by a variety of cars, Matthew developed a strong foundation in automotive technology and design. His work emphasizes accuracy and depth, aimed at informing both enthusiasts and industry professionals with straightforward, precise reporting.
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