In 2003, the law Move Over Slow Down was passed, in part to protect emergency personnel while they are at a stop on the side of the road.
Specifically, the law states that motorists must change lanes when they see an emergency vehicle with activated lights on the side of the road. If they cannot change lanes, they must slow down 20 miles below the posted speed limit.
These emergency vehicles include, police, fire, EMS, TxDot, and tow vehicles.
Violations can be as much as $200; the fine increases to $500 if there is property damage. If violators cause bodily injury, they can be charged with a Class B misdemeanor, resulting in possible jail time and a maximum fine of $2,000.