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UK Road Signs

Road marking

Stop line

Stop line: a single solid white line across the end of a side road, with the word STOP painted before it
Diagram: not to scale.

What does a stop line mean?

At a Stop sign you must stop behind the solid white line every time, even if the road is clear, then go when safe.

Also known as: Solid white line at a junction

What it means

You must come to a complete stop behind the line before you go on.

A stop line is a single, solid white line across the road. At a junction it goes with a Stop sign, and the word STOP is often painted on the road too.

Stop lines are also used at traffic lights and level crossings, where you must stop behind them when the lights tell you to.

Where you'll see it

At junctions with a Stop sign where visibility is poor, at traffic lights and at level crossings.

Rules to know

  • You must stop behind the line at a junction with a 'Stop' sign and a solid white line across the road. Wait for a safe gap in the traffic before you move off.

    The Highway Code, Rule 171

  • You must stop behind the white 'Stop' line across your side of the road at traffic lights unless the light is green.

    The Highway Code, Rule 175

Common mistakes

  • Mistake: Slowing down and rolling across when the road looks clear.

    Instead: You must come to a complete stop behind the line every time.

Test yourself

Recalling the answer helps it stick. Pick an answer to see how you did.

Question 1 of 2

What does this marking mean?

A single solid white line across the end of a side road, with a large word painted on the road before it

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More road markings

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Sources

The diagram is our own illustration of the marking, not to scale. Official drawings are in Know Your Traffic Signs and the Highway Code.

Last reviewed 6 October 2026. This page explains the marking in our own words; for the full rules, see The Highway Code. How we source and check content