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.
Section: General rules, techniques and advice for all drivers and riders (rules 103 to 158) Subsection: Other stopping procedures (rules 107 to 112)All Highway Code Rules | My Saved Highway Code Rules