← General rules, techniques and advice for all drivers and riders
Rule 112: The horn
Legal requirement — says MUST
Other stopping procedures (rules 107 to 112)
The horn. Use only while your vehicle is moving and you need to warn other road users of your presence. Never sound your horn aggressively. You MUST NOT use your horn
- while stationary on the road
- when driving in a built-up area between the hours of 11.30 pm and 7.00 am
except when another road user poses a danger.
Law CUR reg 99
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.
Car
- When may you sound your vehicle's horn? Road and traffic signs
- When are you not allowed to sound your vehicle's horn? Safety and your vehicle
- Powered vehicles used by disabled people are small and can be hard to see. What must they display if they're travelling on a dual carriageway? Vulnerable road users