The Arizona Revised Statutes have been updated to include the revised sections from the 55th Legislature, 2nd Regular Session. Please note that the next update of this compilation will not take place until after the conclusion of the 56th Legislature, 1st Regular Session, which convenes in January 2023.
This online version of the Arizona Revised Statutes is primarily maintained for legislative drafting purposes and reflects the version of law that is effective on January 1st of the year following the most recent legislative session. The official version of the Arizona Revised Statutes is published by Thomson Reuters.
28-729 - Driving on roadways laned for traffic
<!Creation Date: 09/16/22>
<!Author: Arizona Legislative Council>
28-729. Driving on roadways laned for traffic
If a roadway is divided into two or more clearly marked lanes for traffic, the following rules in addition to all others consistent with this section apply:
1. Except as provided in section 28-903, a person shall drive a vehicle as nearly as practicable entirely within a single lane and shall not move the vehicle from that lane until the driver has first ascertained that the movement can be made with safety.
2. On a roadway that is divided into three lanes, a person shall not drive a vehicle in the center lane except when overtaking and passing another vehicle where the roadway is clearly visible and the center lane is clear of traffic within a safe distance, or in preparation for a left turn or where the center lane is at the time allocated exclusively to traffic moving in the direction the vehicle is proceeding and is signposted to give notice of the allocation.
3. Official signs may be erected directing slow-moving traffic to use a designated lane or designating 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 sign.