It is key to remember that, according to Illinois Compiled Statutes 625 ILCS 5/11-401 and 625 ILCS 5/11-402, it is illegal to leave the scene of an accident if it resulted in damage to a car, personal injury or death. Leaving the scene of an accident is a Class A misdemeanor, punishable up to 1 year in jail and/or a $2,500 fine along with probation of up to 24 months.
Also, Illinois law requires you to file a crash report if the accident caused death, bodily injury or over $1,500 in property damage.