(A) Preferential right-of-way at an intersection may be indicated by stop signs or yield signs as authorized in ILCS Chapter 625, Act 5, § 11-302.
(B) Except when directed to proceed by a police officer or traffic-control signal, every driver of a vehicle and every motorman of a streetcar approaching a stop intersection indicated by a stop sign shall stop at a clearly marked stop line, but if none, before entering the crosswalk on the near side of the intersection, or if none,then at the point nearest the intersection roadway where the driver has a view of approaching traffic on the intersecting roadway before entering the intersection.
(C) The driver of a vehicle approaching a yield sign if required for safety to stop shall stop before entering the crosswalk on the near side of the intersection or, in the event there is no crosswalk, at a clearly marked stop line, but if none, then at the point nearest the intersecting roadway where the driver has a view of approaching traffic on the intersecting roadway.
(ILCS Chapter 625, Act 5, § 11-1204) Penalty, see § 70.99