Whenever any roadway has been divided into two or more clearly marked lanes for traffic, the following rules in addition to all others consistent herewith shall apply.
(A) A vehicle shall be driven as nearly as practicable entirely within a single lane and shall not be moved from the lane until the driver has first ascertained that the movement can be made with safety.
(B) Upon a roadway which is divided into three lanes and provides for two-way movement of traffic, a vehicle shall not be driven in the center lane except when overtaking and passing another vehicle traveling in the same direction when the center lane is clear of traffic within a safe distance, or in preparation for making a left turn or where the center lane is at the time allocated exclusively to traffic moving in the same direction that the vehicle is proceeding and the allocation is designated by official traffic-control devices.
(C) Where official traffic-control devices may be erected to direct specific traffic to use a designated lane or designate those lanes to be used by traffic moving in a particular direction regardless of the center of the roadway and drivers of vehicles shall obey the directions of every such device. Where on multi-lane controlled-access highways with three or more lanes in one direction or on any multi-laned highway with two or more lanes in one direction, there are signs designating lanes of traffic to be used by different types of motor vehicles, drivers must obey lane designation signing except when it is necessary to use a different lane to make a turning maneuver.
(D) Where official traffic-control devices are installed prohibiting the changing the lanes on sections of roadway, drivers of vehicles shall obey the directions of every such device.
(1990 Code, § 28-109) (Ord. 79-690, passed 9-17-1979)
Statutory reference:
Similar provisions, see ILCS Ch. 625, Act 5, § 11-709