Emergency vehicles in the theory test: letting them pass safely and legally
Updated •6 min read
When an emergency vehicle approaches, do not panic: think about its route and let it pass while still complying with all traffic signs (Highway Code rule 219). If necessary pull to the side and stop, but avoid stopping before the brow of a hill, a bend or a narrow section of road (rule 219).
This page covers how to recognise emergency and incident support vehicles, what to do when one approaches, why you do not break the law to let it through, and what changes on a motorway. Every rule is from the Highway Code on gov.uk, and each rule number links to our own rule page.
Which vehicles and which lights (rule 219)
Rule 219 says to look and listen for:
| Vehicle | Lights the Highway Code lists |
|---|---|
| Ambulances, fire engines, police, doctors and other emergency vehicles | Flashing blue, red or green lights and sirens, or flashing headlights |
| Traffic officer and incident support vehicles | Flashing amber lights |
What to do when one approaches (rule 219)
Rule 219 sets out the steps:
- Do not panic. Think about the vehicle's route.
- Take appropriate action to let it pass, while complying with all traffic signs.
- If necessary, pull to the side of the road and stop. Try to avoid stopping before the brow of a hill, a bend or a narrow section of road.
- Do not endanger yourself, other road users or pedestrians, and avoid mounting the kerb.
- Do not brake harshly approaching a junction or roundabout, because a following vehicle may not have the same view as you.
Never break the law to let it pass
Rule 219 tells you to let an emergency vehicle pass "while complying with all traffic signs". That means a red traffic light still applies to you. Rule 176 says you MUST NOT move forward over the white line when the red light is showing. Our traffic lights guide covers the stop line rules.
The same applies to other signs and markings: do not mount the kerb, and do not put pedestrians or other road users at risk to make space. Wait for a safe and legal place to move aside.
In slow-moving traffic, rule 151 says to leave enough space to manoeuvre if an emergency vehicle needs to get past.
When the police want you to stop (rule 106)
Rule 106 says the police will usually attract your attention by flashing blue lights or headlights, or by sounding a siren or horn, usually from behind. They may point or use the left indicator to direct you to the side. You MUST then pull over and stop as soon as it is safe, and switch off your engine (gov.uk: rules 103 to 158).
On a motorway (rules 258, 264 and 281)
- Red X lanes: rule 258 says a red "X" and red flashing lights mark a closed lane, and you MUST NOT drive in it. The Highway Code says the emergency services use closed lanes to reach incidents (gov.uk: motorways).
- Vehicles stopped at the side: rule 264 says to be aware of emergency services, traffic officers and recovery workers stopped on the hard shoulder or in an emergency area. If you are in the left lane and it is safe, move into the next lane to give them more space.
- Flashing lights ahead: rule 281 says if you see emergency or incident support vehicles with flashing lights in the distance, there may be an incident ahead. Slow down and be prepared to move safely into another lane or stop. You MUST follow directions from police or traffic officers about passing the incident (gov.uk: breakdowns and incidents).
Our motorway rules guide covers lanes and signals in full.
Practice questions
These questions are written for this page to test the rules above. They are not DVSA questions.
- You are first in a queue at a red light and an ambulance with blue lights comes up behind you. Should you cross the stop line to let it through? No. Rule 219 says to let it pass while complying with all traffic signs, and rule 176 says you must not cross the line on red.
- A fire engine is approaching from behind on a narrow road with a bend ahead. Where should you pull in? Somewhere safe after the bend, not before it. Rule 219 says to avoid stopping before a bend, the brow of a hill or a narrow section.
- What lights do traffic officer vehicles use? Flashing amber lights (rule 219).
- On a motorway you see flashing lights from emergency vehicles in the distance. What should you do? Slow down and be prepared to move into another lane or stop, because there may be an incident ahead (rule 281).
- A police car behind you flashes its headlights and the officer points to the side. What must you do? Pull over and stop as soon as it is safe, then switch off your engine (rule 106).
Practise the rules
Emergency vehicles also come up alongside accidents and first aid and vulnerable road users. Try the free practice questions to test yourself.
Check what you remember
Start free with the theorytest.ai diagnostic to see whether emergency vehicles are a weak area. theorytest.ai is independent and is not affiliated with the DVSA. Gov.uk does not publish test questions, so we cannot say how many are about emergency vehicles.
Frequently asked questions
What should you do when an emergency vehicle approaches?
Do not panic. Consider its route and let it pass while complying with all traffic signs. If necessary pull to the side and stop, avoiding bends, hill brows and narrow sections (rule 219).
Can you go through a red light to let an ambulance pass?
No. Rule 219 says to comply with all traffic signs, and you must not cross the stop line on red (rule 176).
What colour lights do emergency vehicles use?
Flashing blue, red or green lights for emergency vehicles, and flashing amber lights for traffic officer and incident support vehicles (rule 219).
Should you mount the kerb to let an emergency vehicle through?
No. Rule 219 says to avoid mounting the kerb and not to endanger yourself, other road users or pedestrians.