Traffic control: traffic regulation; requirement to drive in the right-hand lane of a roadway with 2 lanes for travel in 1 direction; modify. Amends sec. 634 of 1949 PA 300 (MCL 257.634).

This bill modifies Michigan's vehicle code to clarify lane usage rules for drivers on roadways with two or more lanes traveling in the same direction. It requires vehicles to stay in the extreme right-hand lane unless passing, turning left, avoiding streetcars, or responding to construction. The law specifically restricts heavy trucks and trailers from using any lane other than the rightmost one on freeways with three or more lanes, except when making turns or avoiding hazards. Local governments are also prohibited from passing ordinances that contradict these specific lane assignment rules. Violations of these requirements are classified as civil infractions.