Rule 71: Advanced stop lines and red lights
At traffic light junctions and at cycle-only crossings with traffic lights, you MUST NOT cross the stop line when the traffic lights are red.
Some junctions have an advanced stop line to enable you to position yourself ahead of other traffic and wait (see Rule 178). When the traffic lights are red, you may cross the first stop line, but you MUST NOT cross the final stop line.
Why the capitals matter. The Highway Code writes a rule in capitals — MUST or MUST NOT — when it is backed by law, so breaking it is a criminal offence. The rules that do not use capitals are advice.
5 theory test questions on this rule
From the DVSA revision question bank. These are not the questions asked in the real theory test. Each one shows the answer, the explanation, and our own note on why every other option is not it.