HOLMDEL - The mother of a New Jersey state trooper killed in the line of duty last year is now promoting a law that could have saved his life if it was followed.

The "Move Over" law was enacted in 2009, and requires drivers to move over a lane when approaching an emergency vehicle on the side of the road.

Trooper Marc Castellano was killed when he was hit by a car while investigating a crime scene on the side of a major road. Castelllano's mother, Donna Setaro, says most people don't even know about the requirement to move over and slow down when you see flashing lights on the side of a road.

Setaro has created the "Move Over Awareness Campaign" and is going into New Jersey classrooms along with State Trooper Randy Pangborn to promote the law.