Motorcycle and car at a Chicago intersection illustrating a collision cause

Common Causes of Chicago Motorcycle Accidents (and How Fault Is Proven)

June 13, 2026

Common Causes of Chicago Motorcycle Accidents

Understanding the common causes of Chicago motorcycle accidents helps you ride more defensively and, if the worst happens, helps you understand how fault is proven. Most motorcycle crashes in the city are not caused by reckless riders. They are caused by drivers who fail to see motorcycles, misjudge their speed, or simply are not paying attention. From the Loop to the neighborhoods, the patterns repeat again and again.

The Most Common Causes

Left-Turning Drivers

The single most common motorcycle crash involves a car turning left across a rider's path. The driver fails to yield, often claiming they never saw the bike. These crashes are frequent at busy intersections along Western, Ashland, and Cicero.

Unsafe Lane Changes

On the Kennedy and Dan Ryan, drivers change lanes without checking blind spots and drift right into a rider. Motorcycles are easy to miss in a quick mirror glance.

Distracted Driving

Texting, eating, and navigation apps pull driver attention off the road. A driver looking down for two seconds at highway speed travels a long way blind.

Speeding and Tailgating

Following too closely leads to rear-end crashes, which can throw a rider from the bike. Speed also reduces the time a driver has to react to a motorcycle.

Dooring and Road Hazards

In dense neighborhoods, a parked driver opening a door into traffic can knock a rider down. Chicago potholes, steel construction plates, and wet pavement add their own dangers.

Impaired Driving

Drunk and drugged drivers remain a serious threat, especially late at night and on weekends.

How Fault Is Proven in Illinois

Illinois uses modified comparative negligence. You are barred from recovery if you are found more than 50 percent at fault, and your award is reduced by your percentage of fault if you are 50 percent or less at fault. Because of this rule, proving who caused the crash is the heart of every case. Insurers will try to assign blame to the rider to reduce or eliminate what they pay.

The Evidence That Proves Fault

  • Police reports and the responding officer's findings.
  • Traffic and red light camera footage near the crash.
  • Dashcam video from nearby vehicles.
  • Witness statements from drivers and pedestrians.
  • Photos of vehicle damage and the angle of impact.
  • Skid marks, debris fields, and the final resting positions.
  • Accident reconstruction experts in serious cases.

Much of this evidence is time sensitive. Camera footage gets overwritten within days, and physical evidence at the scene disappears fast. The sooner an investigation begins, the stronger your proof of fault.

Insurance and Deadlines

Illinois requires drivers to carry minimum liability coverage of 25/50/20, plus uninsured and underinsured motorist coverage. You generally have two years from the date of the crash to file a personal injury lawsuit. Preserving evidence early protects both your proof and your deadline.

Let Riders Fight Your Fault Battle

Derek Martin and the Driver Defense Team know how to prove fault and beat back the blame game insurers play with riders. Ride Nation Chicago has your back. Enter the free BikersWin $20,000 motorcycle giveaway today, and if a careless driver caused your crash, contact Derek Martin and the Driver Defense Team for a free case review.

This article is attorney advertising and general information, not legal advice, and does not create an attorney-client relationship.

Derek Martin

Derek Martin

Founder, Driver Defense Team. Member, National Academy of Motorcycle Injury Lawyers

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