Illinois Statutes Chapter 625. Vehicles § 5/11-407. Immediate notice of accident

(a) The driver of a vehicle which is in any manner involved in an accident described in Section 11-406 of this Chapter shall, if no police officer is present, give notice of the accident by the fastest available means of communication to the local police department if such accident occurs within a municipality or otherwise to the nearest office of the county sheriff or nearest headquarters of the Illinois State Police.

(b) Whenever the driver of a vehicle is physically incapable of giving immediate notice of an accident as required in Subsection (a) and there was another occupant in the vehicle at the time of the accident capable of doing so, that occupant must give notice as required in Subsection (a).