Green filter arrow. This indicates a filter lane only. Do not enter that lane unless you want to go in the direction of the arrow. You may proceed in the direction of the green arrow when it, or the full green light shows. Give other traffic, especially cyclists, time and room to move into the correct lane.
Advice, not law. This rule is not written in capitals, so breaking it is not an offence in itself — but it can still be used in evidence in court to establish liability. The rules that say MUST or MUST NOT are the ones backed by law.
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.
Car
- You're in the left-hand lane at traffic lights, waiting to turn left. Which signal means you must wait? Road and traffic signs
- You’re waiting at a pelican crossing. What does it mean when the red light changes to flashing amber? Rules of the road
- You've driven up to a pelican crossing. What must you do while the amber light is flashing? Vulnerable road users