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What do you do if an ambulance is behind you at a red light?

Stay behind the stop line and let the ambulance find its own way round. You MUST NOT move forward over the white line while the red light is showing, even to let an emergency vehicle through. That includes moving up into a cycle box: you MUST stop at the first white line.

You know the rule. Can you spot it on the road?

Try it in a free scene
Through the windscreen, a cyclist is in the green cycle box just ahead, the traffic light on the right shows red, and an ambulance is close behind in the mirrors.
You are first in the queue at a red traffic light, with a cyclist waiting in the box ahead of you. Traffic is crossing on green. You hear a siren behind you.

Can you go through a red light for an ambulance?

No. A siren behind you does not change what the red light requires, so you stay behind the white line until it turns green. Look at what is in front of you. Your light is red because others have the right of way, often traffic on a green, and edging out puts you in their path.

The cycle box is no better. It brings you up close to any cyclist waiting there, and the extra room behind you does not help the ambulance, which can find its own way round.

How the three rules fit together

  • Rule 219 says to let an emergency vehicle pass while complying with all traffic signs. Helping never overrides the signal.
  • Rule 176 says you MUST NOT move forward over the white line on red.
  • Rule 178 says you MUST stop at the first white line of an advanced stop line if the lights are amber or red.

What to do while you wait

Sitting still gives the ambulance driver something predictable to work with. If you can let it by without going over the line, do so. If you cannot, stay where you are and let them choose a way round you. Stay calm and keep watching your mirrors.

When your light turns green, look before you go. Only go forward if there is room to clear the junction safely, and give any cyclist alongside or ahead of you enough time and space to move off.

How we mark each mistake

Practice marks only: on a real test, the examiner decides. How faults work.

  • You went over the stop line on red Dangerous fault

    You MUST NOT move forward over the white line when the red light is showing, even to let an emergency vehicle through. You pulled into the path of traffic crossing on green.

  • You moved into the cycle box Serious fault

    When the light is red you MUST stop at the first white line, so you MUST NOT move into the box, which is there for cyclists. It brought you up close to the cyclist and did not help the ambulance, which can find its own way round.

See if you would make them

What the Highway Code says

  • Rule 219: take appropriate action to let it pass, while complying with all traffic signs
  • Rule 176: You MUST NOT move forward over the white line when the red light is showing.
  • Rule 178: MUST stop at the first white line reached if the lights are amber or red

MUST and MUST NOT are the law. Should is advice, which can still be used in evidence in court.

Where this fits on the test

Top 10 fail reason: not responding appropriately to traffic lights. DVSA driving skills: Junctions, Other traffic.

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