Michigan vehicle code requires all motorists to stick to the right lane, except when passing. There's nothing more infuriating than being on the road, eager to get to your destination, and you're stuck behind the slowest moving vehicle ever simply cruising in the far left lane. Michigan semis left lane Photo by Roger Starnes Sr on Unsplash loading...Now, I'm not even going to pretend that I know the ins and outs of semi-truck regulations in Michigan, but I do know in most cases they are not permitted to cruise in the farthest left lane. Michigan law requires those with a gross weight over 10,000 pounds, or vehicles pulling trailers, to stay in the two right-most lanes. While I, personally, can't keep these truckers out of the left lane, Michigan legislation sure can!