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A move over law tells you what to do when you approach a vehicle stopped on or beside the road with its lights flashing. Every US state has one. The basic rule is the same everywhere: move out of the lane next to the stopped vehicle, or slow down if you cannot change lanes safely. This guide covers what the law requires, which vehicles it covers and how states differ.
Key facts
- NHTSA: all 50 states have move over laws.
- They all cover stopped emergency vehicles with flashing lights: police, fire and EMS.
- NHTSA says laws in 19 states and Washington DC go further, covering all vehicles with flashing or hazard lights. That includes highway maintenance, construction, utility and trash vehicles, and disabled cars.
- What to do: change into a lane not next to the stopped vehicle, or slow to a reasonable speed if you cannot safely change lanes.
- Some states set a speed figure. Florida, for example, says slow to 20 mph below the posted limit (5 mph where the limit is 20 mph or less).
What to do when you see flashing lights on the shoulder
- Spot it early. Scan well ahead for flashing lights, flares, cones or warning triangles.
- Check mirrors and blind spot for traffic in the lane you want to move into.
- Signal and move over one lane if it is safe, so there is a full lane between you and the stopped vehicle.
- If you cannot move over (traffic, a two-lane road, a narrow bridge), slow down well below the limit and be ready to stop.
- Stay alert as you pass. People may be standing near the traffic lane or opening doors.
- Return to your lane once you are well past and it is safe.
Do not brake hard or swerve suddenly to move over. A safe, early lane change or a steady slowdown is the goal.
Which vehicles do move over laws cover?
| Vehicle stopped with lights on | Covered? |
|---|---|
| Police, fire truck, ambulance | Yes, in every state |
| Tow truck, highway maintenance, utility, construction, trash vehicle | In many states; check your state law |
| Any disabled vehicle with hazard lights | In 19 states and DC, according to NHTSA (Florida added these in 2024) |
Because the scope varies, the safest habit is to move over or slow down for any vehicle stopped on the shoulder, whatever the state.
State examples
| State | What the handbook or law says |
|---|---|
| California | Move over, or slow down if you can’t, for a stationary emergency vehicle or tow truck with flashing amber lights, and for a stopped road work vehicle with flashing emergency or amber lights (Driver’s Handbook Section 7) |
| Indiana | Change lanes away from a stopped emergency vehicle, amber-light vehicle or disabled vehicle with hazards. If you cannot, slow to 10 mph under the posted limit. Class A infraction for emergency vehicles, Class B otherwise (IC 9-21-8-35) |
| Maryland | Move over for any vehicle stopped, standing or parked with lights flashing, or slow to a safe speed (Driver’s Manual Sec. 8.D) |
| Missouri | On roads with 2 or more lanes your way, change lanes away from a stationary emergency vehicle with red or red and blue lights on; otherwise slow down (Driver Guide Ch. 3) |
| Texas | Leave the lane next to the stopped vehicle if there are two or more lanes your way; otherwise slow to 20 mph below the posted limit, or to 5 mph when the limit is under 25 mph. Covers stopped emergency vehicles, tow trucks, TxDOT and highway maintenance vehicles, utility, garbage and recycling, toll and animal-control vehicles with lights on. Fine $500 to $1,250 (Transportation Code 545.157) |
| Wisconsin | Move to a lane away from a stopped emergency vehicle with lights flashing, or slow down (Motorists’ Handbook) |
Penalties
Penalties vary by state. NHTSA notes that in some states a violation can bring jail time as well as a fine. Florida, for example, can add a fine, fees and points to your record. Check the current penalty in your state’s driver handbook.
Moving vehicles with sirens are different
Move over laws cover stopped vehicles. If an emergency vehicle is coming up behind you with siren and lights, the usual rule is to pull over to the right edge and stop until it has passed. See pulling over for ambulances, fire engines and police.
Common questions
Do move over laws apply on two-lane roads?
Yes. Where you cannot change lanes, you must slow down. Florida’s guidance says the slowdown applies on two-lane roads too.
How much do I have to slow down?
Many states say only “a reasonable speed” or a safe speed. Some give a number, such as Florida’s 20 mph below the posted limit. Check your state handbook.
Does it apply to a car broken down with hazards on?
In 19 states and DC, according to NHTSA, yes. Elsewhere it may not be required, but moving over is still the safe choice.
Is the move over law on the permit test?
It can be. Many state handbooks cover it under emergency vehicles or sharing the road, so read that section.
State guides: Florida move over law, New York move over law and Pennsylvania Steer Clear law. All national guides: learning to drive in the USA.
Sources
- National Highway Traffic Safety Administration, “Move Over: It’s the Law” (nhtsa.gov)
- National Highway Traffic Safety Administration, “Get the Facts: Move Over. It’s the Law.” (nhtsa.gov)
- Florida Highway Safety and Motor Vehicles, “Move Over, Florida!” and “Visiting Florida Frequently Asked Questions” (flhsmv.gov)
- California DMV, “California Driver’s Handbook, Section 7” (dmv.ca.gov)
- Texas Legislature, “Transportation Code section 545.157” (statutes.capitol.texas.gov)
- Indiana BMV, “Indiana Driver’s Manual” (in.gov); Maryland MVA, “Maryland Driver’s Manual” (mva.maryland.gov); Missouri DOR, “Missouri Driver Guide” (dor.mo.gov); Wisconsin DMV, “Motorists’ Handbook” (wisconsindot.gov)
- Florida Highway Safety and Motor Vehicles, “It’s Your Move: FLHSMV Urges the Public to Take Proactive Steps for Safety” (flhsmv.gov)