You may want to start paying more attention to those signs that say “Keep right except when passing” on the freeway.

Michigan State Police say they are cracking down on drivers who use the left lane of the highway for general travel.

Slower drivers that stay in the left lane are violating state vehicle code and, too often, are the cause of road rage incidents.

Troopers say their main focus will be on US-131 in Kent and Montcalm counties.