Michigan lawmakers advance bill banning big rigs from the left lane

A bill that seeks to curb traffic by keeping semi trucks out of the left lane is moving forward in the Michigan House of Representatives.

On August 19, 2025, House Bill 4522 was approved by the Michigan House Transportation and Infrastructure Committee, and it will now come before the full House for consideration.

The bill, introduced by State Rep. William Bruck, would prohibit trucks from using the far left lane on any roadway with three or more lanes. Exceptions would be granted for trucks making a left-hand turn, for safety hazards in the roadway, or if otherwise posted because of a closure due to construction or repair.

The left lane restriction would apply to drivers of a “truck with a gross weight of more than 10,000 pounds, a truck tractor, or a combination of a vehicle and trailer or semitrailer.”

If passed, the bill would build on current state law requiring trucks to keep right unless passing by providing police with an enforcement mechanism, House Republicans say. The legislation would create a “civil infraction” for truckers who violate the left lane restriction.

“This is a practical plan that offers clarity and makes sense for everyone out on our roadways,” Bruck said. “Limiting slower-moving trucks to the right lanes will help reduce congestion, make our highways easier to navigate and increase safety.”

“Like many of the trucks out on our roadways, this plan has racked up some serious mileage trying to get to the governor’s desk over the past year,” Bruck continued. “This is common-sense legislation and I hope it doesn’t get caught up in partisan politics. It is a clear priority to help keep Michigan drivers safer.”