A move over law requires drivers approaching a stopped emergency vehicle with flashing lights to move into a lane away from it or, if that is not safe, to slow down to a reasonable speed.
All 50 states have one, but which roadside vehicles they cover varies from state to state.
What Does a Move Over Law Require on U.S. Roads?
Every state requires drivers to move over and slow down for emergency vehicles with flashing lights. When one is stopped on or next to the road, change into a lane that is not right next to it. If you cannot change lanes safely, slow down to a reasonable speed for the weather, road and traffic conditions.
That guidance comes from the National Highway Traffic Safety Administration, which also notes that breaking a Move Over law results in fines and, in some cases, jail time.
The idea is simple: give the people working at the roadside a buffer. A lane of empty space, or a much slower pass, reduces the chance that a passing car drifts into a stopped vehicle or a person standing beside it.
Which Vehicles Does a Move Over Law Cover? It Depends on the State
Every state covers emergency vehicles with flashing lights, such as police cars, fire trucks and ambulances. Beyond that, coverage varies. In some states the law reaches every vehicle with flashing or hazard lights, including road crews, utility trucks and disabled cars, while in others those vehicles are covered only if state law names them.
According to an NHTSA handout, as of June 2025, 19 states and Washington, DC, require drivers to move over for all vehicles with flashing or hazard lights, including:
- Highway maintenance and construction vehicles
- Utility and trash trucks
- Disabled vehicles
NHTSA does not list those 19 states on its page, and laws change, so the safest habit is to treat any stopped vehicle with flashing or hazard lights as if your state’s law covers it. Your state’s DMV or highway safety office can confirm the exact rule.
| Vehicle stopped on the shoulder | Covered in every state? | Covered in the 19 states and DC with broader laws? |
|---|---|---|
| Police, fire or EMS with flashing lights | Yes | Yes |
| Highway maintenance or construction vehicle | Depends on state law | Yes |
| Utility or trash truck | Depends on state law | Yes |
| Disabled vehicle with hazard lights | Depends on state law | Yes |
How to Move Over Safely, Step by Step
Moving over is only safe if you do it smoothly. These steps follow NHTSA’s guidance and common defensive driving practice.
- Spot the lights early. Scan well ahead, especially on highways and at night.
- Check your mirrors and blind spot. Make sure the next lane is clear before you signal.
- Signal and change lanes. Move to a lane that is not right next to the stopped vehicle.
- Slow down if you cannot move over. Choose a speed that fits the weather, road and traffic.
- Return to your lane only when you are well past. Give the scene plenty of room behind you.
What Counts as a Reasonable Speed When You Can’t Move Over?
A reasonable speed depends on the conditions in front of you. NHTSA’s guidance ties it to the current weather, the road and the vehicle and pedestrian traffic around you, so a speed that feels fine on a dry afternoon may be far too fast on a wet, dark night. Your state’s law may add its own specifics.
On a two-lane road, there may be no second lane in your direction, so slowing down becomes your main option. Ease off early instead of braking hard beside the scene, since sudden braking can surprise the driver behind you.
Watch for people on foot as you pass. Officers, tow operators and stranded drivers may be standing beside their vehicles or walking between them.
Why Move Over Laws Exist Across the U.S.
The first Move Over law passed in South Carolina in 1996, after a paramedic was struck while responding to a crash. Every state has since adopted one, and all states and Washington, DC, now have laws requiring drivers to move over and slow down for emergency vehicles with flashing lights.
Roadside stops leave people exposed to fast traffic only a few feet away. Our story on tow-truck rear-end crashes on the Long Island Expressway looks at how these collisions happen on one busy highway.
When You Are the One Stopped on the Shoulder
Move Over laws protect stranded drivers, too, especially in states where disabled vehicles are covered. Turning on your hazard lights helps other drivers notice you and, in those states, signals that the law applies to your car.
Pull as far off the road as you safely can. Our guide to staying safe while waiting for help after a breakdown covers where to wait and what to do until help arrives.
Frequently Asked Questions About Move Over Laws
Does every state have a move over law?
Yes. All 50 states and Washington, DC, have Move Over laws, though the details vary by state.
What should I do if I can’t change lanes?
Slow down to a reasonable speed for the weather, road and traffic conditions as you pass the stopped vehicle.
Does the move over law apply to disabled cars?
In 19 states and Washington, DC, as of June 2025, it covers all vehicles with flashing or hazard lights, including disabled vehicles. Elsewhere, coverage depends on state law.
What happens if you don’t move over?
Violations bring fines and, in some cases, jail time. The details vary by state.
We’re Here to Help After a Roadside Crash
A crash near a stopped vehicle can leave you sorting out who saw what and who was where. At Local Accident Reports, we can help you request your police report for free through our site
If you have any questions, you can contact our team at 888-657-1460. We are here to assist you.
Last reviewed: November 2026
This post was reviewed by Hernán Beresnak, Lead Editor, Local Accident Reports.
Content is provided for informational purposes only and is not legal advice. Local Accident Reports is not a law firm and does not provide legal representation. Use of this website does not create an attorney-client relationship. See our full disclaimer at https://localaccidentreports.com/disclaimer/ .
