For a property damage claim you should submit two written itemized estimates attached on company letterhead or an itemized paid invoice with proof of payment. Stop if you are in an accident.Under the old law, you had 10 days from the date of a wreck to file an official report. Since the law has changed, you need not report the crash. Go to your local police station or sheriff's office to obtain an accident form. You can fill out an online form with the Illinois State Police. If you are suffering from damages sustained in a car accident, a Chicago car accident lawyer can help guide you when filing a car accident case. The only two ways to file an accident report are at the scene of the crime with a police officer or within 10 days to the Illinois State Police. If you were involved in a traffic crash occurring on a freeway in the Chicagoland area you can file a Desk Report in person within 10 days of the crash. Not sure what to do when someone hits your car?