Getting into a car accident can turn your world upside down in seconds. Your heart pounds, adrenaline surges, and suddenly you’re facing decisions that could affect your safety, legal standing, and finances for years to come. To best protect yourself, it’s important to understand state law about car accidents and insurance requirements. Knowing this information ahead of time could save you major headaches with insurance claims, legal battles, and financial disasters. This handy guide will walk you through the steps to take after a car accident in Illinois.

What To Do After a Car Crash: Safety First

The most important step to take immediately after an accident is to check yourself, and then any passengers in your vehicle, for injuries right away. If you’re able, check that occupants of any other involved vehicles are okay, too. Then, turn on your car’s hazard lights and — if you can move safely and have safety gear available — set up reflective triangles or flares behind your vehicle. Once that’s done, move yourself to a safe location, such as a sidewalk or shoulder, and call 911.

Information Exchange and Documentation

After you’ve ensured the immediate safety of those involved in the crash and around the accident scene, you’ll need to exchange specific information with the other driver(s) involved. Not only does Illinois state law require this, but it’s also helpful for insurance purposes. While you’re talking to the other involved parties, stick to basic facts and avoid accepting blame for the crash. Even a seemingly innocuous “I’m sorry” can jeopardize your insurance or legal claim later. You should exchange these details:

• Driver’s name
• Home address
• Phone number
• License plate number
• Vehicle registration
• Driver’s license
• Insurance company name and policy number
• Vehicle model, make, and year

If your hands are shaking from adrenaline while you take these notes, ask if the other driver will give you permission to take photographs of their information instead. Don’t stop at just photographing licenses and registrations, though — take extensive photos of the accident scene from every angle you can safely manage. 

Document all vehicle damage, the entire accident scene, the road conditions, traffic signs or stop lights, and any skid marks or debris on the road. Make sure to clearly capture the license plates of the vehicles involved, use your phone’s timestamp feature to prove timing, and avoid using the flash (it can wash out important details). If there are any witnesses around, ask for their name and contact information.

Understanding Illinois Legal Requirements

Illinois has many laws that address your responsibilities before and after a motor vehicle collision, such as minimum insurance requirements and duties to file a police report and exchange certain information with the other driver.

Police Reports

In Illinois, you must report any car crash that causes injuries, death, or more than $1,500 in property damage. That reporting threshold drops to just $500 if any involved driver is uninsured. Illinois requires reporting the collision “the fastest way possible,” which is why it’s best to call 911 from the accident scene. 

If the police don’t respond to the scene, you have exactly 10 days to file your own written report with the nearest police precinct if the crash meets these injury or damage thresholds. A lack of police presence makes it even more important that you exchange the necessary information with the other driver. If you leave the scene without providing this, you could be charged with a hit and run, which can result in significant fines and court costs, license suspension, and even jail time.

While it might feel like overkill to get a police report for a seemingly minor fender bender, police reports typically detail exactly how the crash happened, who was involved, what witnesses observed and told officers, and the responding officer’s assessment of who’s at fault — all of which can be vital to supporting an insurance claim or suit against the other driver later.

Insurance Requirements

Illinois drivers must carry certain amounts of liability coverage: at least $25,000 per person and $50,000 per accident for both bodily injury and uninsured motorist coverage, plus $20,000 for property damage. Make sure you maintain an active car insurance policy with these limits or higher. If you don’t have valid insurance and cause an accident, you could be personally responsible for all resulting injuries and damages. Regardless of who you believe caused the collision, contact your insurance company right away after an accident. Your policy likely requires this, and skipping this step could void your coverage.

Legal Liability and Lawsuits

Illinois is an “at-fault” state that uses modified comparative negligence. This means that whoever causes the accident pays for injuries and car damages. If you’re 50% or less at fault, you can recover damages from the at-fault party, but your compensation is reduced based on your percentage of responsibility. For example, if you are 25% at fault and the other driver is 75% at fault, you could recover $7,500 of a $10,000 claim for damages.

If you believe the other driver is partially or fully at fault for your accident, contact their insurance company to file a claim. It’s best to notify them as soon as possible, but don’t feel pressured into accepting a quick settlement offer or providing a recorded statement. Insurance companies may try to lowball you before you know the extent of your injuries or damages.

However, per Illinois law, you must settle your claim or initiate a lawsuit within a certain period of time: two years for injury claims and five years for vehicle damage claims. If the accident involved a government vehicle, you typically have just one year.

Medical Attention and Health Documentation

You should always see a doctor after an accident, even if you feel fine. Adrenaline can act as a natural painkiller that masks injury symptoms, so it’s not unusual to begin experiencing aches and pains hours or even days afterward. Watch out for delayed symptoms, such as headaches and neck, shoulder, or back pain. These can indicate common car accident injuries such as whiplash or concussions, as well as more serious conditions such as herniated discs or traumatic brain injuries. Take note of any unusual symptoms, such as stomach pain, numbness or tingling, and emotional struggles (insomnia, anxiety, etc.).

Medical care serves two purposes: treating your injuries properly and creating official records that legally connect them to the accident. Detailed medical records establish exactly when symptoms started, what treatments doctors recommended, scientifically link injuries directly to the crash, quantify your actual damages in dollars, and provide leverage during settlement negotiations. If you don’t have medical documentation or don’t follow your treatment plan carefully, insurance companies can use that against you to reduce or even deny your injury claim.

Protect Yourself With American Auto Insurance

Want better protection in the event of an auto accident? Call 773-286-3500 or visit us online to get a quote today.

Questions Illinois Drivers Ask After a Car Accident

What should I do first after a car accident in Illinois?

Check for injuries, ensure everyone is safe, turn on hazard lights, move to a secure location if possible, and call 911 immediately.

What information should I exchange with the other driver?

Illinois law requires exchanging your name, address, phone number, license, registration, license plate number, vehicle details, and insurance information.

Why is documenting the accident scene so important?

Photos and witness details support insurance claims, help prove fault, and protect you if disputes arise later.

When am I legally required to file a police report in Illinois?

You must report crashes involving injury, death, or more than $1,500 in damage — or $500 if an involved driver is uninsured.

What insurance coverage is required for Illinois drivers?

Illinois requires at least $25,000 per person and $50,000 per accident for bodily injury, $20,000 for property damage, and matching uninsured motorist coverage.

How does Illinois’ modified comparative negligence law affect claims?

If you are 50% or less at fault, you can recover damages, but your payout decreases based on your percentage of fault.

Why should I seek medical attention even if I feel fine?

Adrenaline can hide injuries. Early medical evaluation documents symptoms, connects them to the crash, and strengthens your insurance claim.

Cars are involved in a frontal collision. by Scott Greer is licensed with Unsplash License