The Highway Code rules you may not know

From driving too slowly to furious cycling (yes, really), these are some of the Highway Code rules you may have inadvertently broken.

Road signs

First printed in 1931, The Highway Code urged all road users to be careful and considerate towards others, with a strong emphasis on improving road safety. Its purpose remains the same today.

When that first booklet was published, there were only 2.3 million motorised vehicles in the UK, yet more than 7,000 road users were killed every year. For comparison, there were 1,624 road casualties in 2023.

A third of the original Highway Code focused on the various hand signals used by the police and road users. Today, just a single page is devoted to hand signals.

Mirrors were not mentioned in the 1931 edition of the Highway Code, but drivers were advised to use their horn when overtaking other vehicles. Drivers of horse-drawn vehicles were told to ‘rotate the whip above the head; then incline the whip to the right or left to show the direction in which the turn is to be made’.

Needless to say, the Highway Code has changed a little since 1931. Colour was introduced to the book in 1954, followed by the inclusion of motorway driving in the late 1950s. Photographs and 3D illustrations were added for the sixth edition of 1968.

Depending on when you passed your driving test, it might be a while since you picked up a copy of the Highway Code. With this in mind, here are a few of the road rules you may have forgotten.

Middle-lane hogging

Smart motorways dangerous

The Highway Code states that you should always drive in the left-hand lane when the road ahead is clear. If you are overtaking vehicles, you should return to the left-hand lane as soon as you are safely past.

On-the-spot fines and three penalty points await those drivers who are caught flouting the rules, such as by ‘middle-lane hogging’ on the motorway.

Driving too slowly

Yes, you could be fined £100 and given three penalty points if you are deemed to be driving at a speed low enough to endanger other road users. However, contrary to common belief there is no minimum speed limit on UK motorways.

If a court decides that you have also been driving without due care and attention, the penalty could be increased to a £5,000 fine and nine penalty points.

Speed camera awareness

Speed camera warning sign

Flashing your headlights to warn oncoming drivers of a speed camera or roadside speed trap is against the law.

Anyone caught doing so could receive a £1,000 fine for ‘wilfully obstructing a constable in the execution of his/her duty’.

Red lights

Motorists and cyclists should both stop at a red light. When an advanced stop line for bikes is present, cyclists must still adhere to the same rules of the road.

It is an offence to ride through an amber light, unless not doing so would likely cause a collision.

Snow on your roof

Driving safely in snow

It is illegal to start your journey with snow on the roof of your car. If it falls forward onto the windscreen, it could obscure your view, while chunks of snow flying off your car could impede those following behind.

Offending motorists are likely to be given a fine and three penalty points, so allow extra time and prepare your car properly before setting off.

Careless and furious cycling

Should 'death by dangerous cycling' be an offence?

Careless cycling without due care and attention can result in fines of £1,000 and £2,500 for careless and dangerous cycling respectively. ‘Furious cycling’ came into UK legislation in 1861 and applies to drivers of vehicles or carriages who cause bodily harm to anyone by making furious progress.

A fine of up to £1,000 can be issued for cycling furiously, although you cannot be prosecuted for speeding on a bicycle.

Cycling on the pavement

Cycling in London

It is an offence to drive a carriage on ‘any footpath or causeway by the side of any road made or set apart for the use or accommodation of foot passengers’. The rules apply to adults and children, but a child under the age of 10 (or eight years old in Scotland) cannot be prosecuted.

Want to brush up further on your knowledge of The Highway Code. You can buy a copy of the booklet for £4.99 via the Safe Driving for Life website.

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Motoring Research team
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