← General rules, techniques and advice for all drivers and riders
Rule 131: Lane dividers
Advice, not law
Lines and lane markings on the road (rules 127 to 132)
Lane dividers. These are short, broken white lines which are used on wide carriageways to divide them into lanes. You should keep between them.
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.
3 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.