One thing every driver does but is against Highway Code and could lead to fine

It's something almost every driver has probably done. But, possibly unknown to them, they are breaching the rules of the Highway Code.

It's about when drivers should flash their lights and the rules can be confusing. It's common practice for motorists to flash others as a sign they are giving them right of way or inviting them to proceed. They might flash back to say thank you.

But use of the lights in this way is a no-no according to the Highway Code. It states you should only flash your headlights to let other road users know that you are there. You should not flash your headlights to:

• Intimidate other road users
• Convey any other message
• Assume that flashing headlights is a signal inviting you to proceed.

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These rules are in place in a bid to avoid confusion on the roads and potential crashes as a result. One driver could misinterpret the message of another, or another vehicle could think the flash is aimed at them when intended for someone else.

Despite this rules, it happens on the roads up and down the country every day. Another rule that is more well known is motorists should not flash others to let them know a police van is up ahead.

While it might be seen a good turn to a fellow motorist, officers will take a dim view of this and a fine of up to £1,000 could follow. Tom Chilton, from Bristol Street Motors, told PowerBulbs: "The Highway Code says you should use your headlights to make others aware of your presence.

"If you are caught flashing them to alert someone about a speed camera, you could be fined £1,000 for obstructing police work. Drivers flash their lights for different reasons, and that can lead to misunderstandings.

"One driver might be flashing to let you know they’re there, while another is telling you to go. It’s easy to see how things could go wrong."