The Missouri State Highway Patrol is launching an effort to enforce a law that has been in effect since 2002, but is often disregarded by motorists. The Patrol’s Captain Chris Ricks says it’s a safety rule requiring drivers to exercise caution when they come upon an emergency vehicle stopped on the side of the road. They’re expected to slow down and move into another lane, if possible. As part of this campaign, a Highway Patrol car involved in a legitimate enforcement stop at the side of the road will be joined by another Patrol vehicle, in close proximity, which will enforce the safety regulations requiring other traffic to slow down.