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Michigan law requires drivers on two-lane roads to use the left lane for passing only.

Drivers who impede traffic by driving too slowly in the left lane can receive a civil infraction.

Heavy trucks and vehicles with trailers are generally restricted to the two right-most lanes on multi-lane highways.

Improper use of the left lane is a safety concern that can lead to traffic backups, aggressive driving and crashes.

Left-lane driving sparks some of the biggest frustrations on Michigan highways, and state law makes clear when motorists can — and can’t — cruise in that far-left lane.

So-called “left lane squatters,” drivers who stay in the lane instead of using it to pass, can face civil infractions if their speed impedes traffic. Police and traffic experts say it’s n

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