What to Do After a Car Accident in Illinois: A Step-by-Step Guide

Last Updated: October 25, 2026

After a car accident in Illinois, check for injuries, call 911, exchange information with other drivers, photograph the scene and damage, get witness contacts, and report to your insurance company. Do not admit fault or accept blame at the scene. Seek medical evaluation and consult an attorney before signing release forms.

The moments after a car accident are disorienting and stressful, but the decisions you make in those first hours and days can have a lasting impact on your ability to recover compensation for your injuries. Whether you were involved in a fender bender on War Memorial Drive or a serious collision on I-74, knowing what to do after a car accident in Illinois protects both your health and your legal rights.

Step 1: Check for Injuries and Call 911

Your first priority is safety. Check yourself and your passengers for injuries. If anyone is hurt, call 911 immediately. Even if injuries seem minor, having paramedics evaluate everyone at the scene creates an important medical record. Many car accident injuries, including whiplash, concussions, and soft tissue damage, may not produce noticeable symptoms for hours or even days after the collision.

625 ILCS 5/11-401(a) requires the driver of a vehicle involved in a crash resulting in personal injury or death to stop immediately at the scene or as close as possible, return forthwith, and remain until section 11-403 is fulfilled, without obstructing traffic more than necessary. Personal injury in that section means an injury requiring immediate professional treatment in a medical facility or a doctor’s office. Section 11-407(a) requires notice, if no police officer is present, by the fastest available means to the local police department when the crash is inside a municipality, and otherwise to the nearest county sheriff or the nearest Illinois State Police headquarters. Notice is required when the crash results in injury or death; property damage in excess of $1,500, or $500 if a vehicle is subject to section 7-601 and is not covered by a liability insurance policy; a school-bus crash caused by a collision, a sudden stop, or otherwise that results in any property damage, injury, or death; or a crash within 50 feet of a school bus that injures or kills a person waiting to board or who has just exited. If the driver is physically incapable and another occupant can give notice, subsection (b) requires that occupant to give it. The source for section 11-407 includes P.A. 103-1047, effective January 1, 2025. A police report creates an official record of the accident that documents the responding officer’s observations, statements from both drivers, and any citations issued. This report becomes valuable evidence if you later need to file an insurance claim or lawsuit.

Step 2: Document the Scene

If you are physically able, use your phone to photograph everything at the scene. Capture all vehicles involved from multiple angles, showing the damage and their positions on the road. Photograph skid marks, road conditions, traffic signals, and any debris. Take wide shots that show the intersection or stretch of road where the accident occurred. If there are witnesses, ask for their names and contact information.

Do not admit fault or apologize at the scene, even if you think you may have contributed to the accident. Statements made at the scene can be used against you later. Stick to exchanging insurance information and cooperating with law enforcement.

Step 3: Seek Medical Attention Promptly

See a doctor within 24 to 48 hours of the accident, even if you feel fine. Adrenaline can mask pain, and many common car accident injuries have delayed onset. A medical evaluation creates documentation linking your injuries to the accident, which is essential for your claim. If you wait weeks to see a doctor, the insurance company will argue that your injuries were not caused by the accident or were not serious enough to warrant treatment.

Follow your treatment plan consistently. Attend all scheduled appointments, fill prescriptions, and complete recommended physical therapy. Gaps in treatment give insurance adjusters ammunition to argue that you were not seriously hurt or that you failed to mitigate your damages.

Step 4: Notify Your Insurance Company

Report the accident to your own insurance company promptly, as most policies require timely notification. Provide basic facts about the accident but avoid giving a recorded statement to the other driver’s insurance company without first consulting an attorney. Insurance adjusters are trained to ask questions designed to minimize your claim or elicit admissions of fault.

Step 5: Preserve Evidence

Keep all documents related to the accident organized and accessible. This includes the police report, medical records and bills, repair estimates, rental car receipts, and any correspondence with insurance companies. If you miss work due to your injuries, keep records of lost wages and any impact on your ability to perform your job duties. A daily journal noting your pain levels, limitations, and emotional state can also provide valuable evidence of how the accident has affected your daily life.

Step 6: Consult a Personal Injury Attorney

For anything beyond a minor fender bender, consulting with an experienced personal injury attorney can significantly affect the outcome of your claim. An attorney can handle communications with insurance companies, ensure critical evidence is preserved, evaluate the full value of your claim including future damages, and negotiate from a position of knowledge and strength.

At Parker & Parker Attorneys in Peoria, we offer free consultations for people injured in car accidents throughout Central Illinois. The sooner you call, the easier it is to preserve evidence, evaluate coverage, and protect the claim.

Dealing with injuries after a car crash can feel overwhelming. Our Peoria personal injury team can guide you through every step of the legal process.

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