Motorists break this one Highway Code rule every day as hardly anyone knows it's illegal

Many drivers believe they are well-versed on the rules of the road, but there are some everyday occurrences that unknowingly breach the Highway Code. These are actions that motorists often overlook and don't consider as wrongdoings.

One such lesser-known violation relates to the use of the car horn. Despite being a common sound on UK roads, the horn should only be used under specific circumstances and not when the vehicle is stationary, including during traffic jams or at traffic lights.

This rule also applies when parked outside a residence, with the only exception being in case of an emergency or danger. Most drivers remain oblivious to this regulation regarding horn usage.

Horns are frequently sounded during instances of road rage, when one driver has upset another. However, horns should strictly be used to alert other drivers of your presence or to signal a potential hazard or danger.

The RAC, a motoring organisation, stated: "Drivers should only use a car horn when they need to alert other road users of danger of a collision or in the event of a potentially dangerous situation.", reports Birmingham Live.

They added that it can also warn drivers when approaching a blind spot or corner, especially during low-visibility situations like fog, heavy rain, or snow.

"The horn is situated in the middle or the steering wheel and will sound when pushed with enough force. Misuse of a car horn is illegal and can result in fines for the driver and owner of the vehicle."

"Outside of emergency situations, drivers are not allowed to use car horns in built-up areas between the hours of 11pm and 7am. Drivers are also not allowed to use them in stationary traffic, to get the attention of other road users or used in frustration."

"Repeated use of a car horn is also banned. A car horn is a safety device – and not something that is used to catch the attention of other drivers or as a sign of aggression."