If you're hitting the road this holiday weekend a state trooper has a warning that law enforcement will be out full force.

The Ohio State Highway Patrol is reminding motorists, if you see emergency lights on the side of the road to slow down and move over. It's the law.

For Canfield Trooper Brian Cowles, it's been more than three years since he was struck while helping a stranded motorist in the median of I-680. 

"I've been far more alert since that happened," said Cowles. "It's very stressful being out there, especially when you hear the rumble strips."

Because of his injuries, Trooper Cowles was off work for about 7 months and under went two surgeries. 

The woman who struck Cowles was charged with OVI, failure to control and failure to move over for a stopped public safety vehicle.

Cowles is now the face of a recent PSA, reminding motorists it's the law to slow down and move over for stopped emergency vehicles.

"By slow down, I mean not to 65 miles per hour. Slow down far below that to a reasonable speed where you can pass with safety," said Cowles.

And as thousands of people are expected to hit the highway this holiday weekend, Cowles some more advice.

"Always wear your seat belt, drive sober, and obviously when you see a stopped public safety vehicle on the shoulder with it's lights activated move over a lane and if you can't safely do so, slow way down and proceed with caution," said Cowles.