Michigan State Police troopers will be on watch for motorists hanging out in the left lane — those “south paw drivers” — across West Michigan following a spike of complaints on the region’s highways, according to a news release.

Michigan law: Driving in the left lane

The lookout is billed as an education initiative, with police especially monitoring the roadways now through the end of April.

“Many people simply don’t realize that the left lane is reserved for the passing motorist,” said Lt. Chris McIntire of the MSP’s Rockford Post in the release. “Besides being generally disruptive to traffic flow, this violation can actually be dangerous, as frustrated motorists attempt risky maneuvers to get around the log jam.”