Arizona troopers nabbed multiple CMVs for driving for miles in left lane of I-10 construction zone

Arizona troopers took enforcement action against commercial motor vehicle (CMV) drivers for lingering in the left lane of an interstate construction zone.

On August 5, 2026, Arizona Department of Public Safety (AZDPS) Highway Patrol troopers conducted traffic enforcement in an I-10 construction zone between Phoenix and Tucson.

As part of the enforcement, troopers “took enforcement action” against five commercial vehicles after “each CMV was observed traveling in the left lane for distances ranging from one and a half to over four miles.”

AZDPS said that the CMVs were in violation of the “commercial trucks – right lane only” requirement.

Officials reminded truckers that “CMVs must remain in the right lane at all times within a construction zone when official signs are posted.”

“These violations caused noticeable traffic disruptions, slowing and bunching up traffic behind the CMVs, followed by unsafe speed accelerations once they moved back into the right lane. This kind of lane misuse directly impacts traffic flow and increases safety risks, especially in constrained construction zones,” said AZDPS.

Truck traffic has been restricted to the right lane on parts of I-10 in Arizona for years due to a construction project to widen the interstate.