← General rules, techniques and advice for all drivers and riders
Rule 136: Four or more lanes
Advice, not law
Multi-lane carriageways (rules 133 to 143)
Where a single carriageway has four or more lanes, use only the lanes that signs or markings indicate.
Dual carriagewaysA dual carriageway is a road which has a central reservation to separate the carriageways.
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
- Which sign shows that you're entering a one-way system? Road and traffic signs
- Where would it be unsafe to overtake? Hazard awareness
- You're turning right onto a dual carriageway. What should you do if the central reservation is too narrow to contain your vehicle? Rules of the road
- Where are amber reflective studs found on a motorway? Motorway rules