THE days are getting longer, but using your headlights wrong is still a common mistake – and it could cost you.

Drivers face fines up to £5,000 if they’re sent to court for misusing their headlights.

Flashing a driver to intimidate them, to signal they can proceed at a roundabout or as a warning there are speed cameras up ahead are all strictly against road laws.

Rule 110 的 Highway Code states: “Only flash your headlights to let other road users know that you are there.”

和 111 添加: “Never assume that flashing headlights is a signal inviting you to proceed.

“Use your own judgement and proceed carefully.”

Smaller on-the-spot fines of £100 are likely if your headlines are faulty, but intentionally misusing them is much more serious.

Wrongly flashing someone to let them know they can proceed is unlikely to lead to a fine – but warning drivers about upcoming speed cameras is quite different.

If you’re caught doing that, you could be charged with breaching of section 89 of the Police Act 1996.

This law says it’s an offence to “wilfully obstruct a constable in the execution of his/her duty” and carries a maximum fine of £1,000.

If you’re taken to court for the offence, you could face a fine up to £5,000 – plus nine penalty points on your licence.

Jack Cousens, head of roads policy for the AA, 说: “The Highway Code is clear that drivers should only flash their headlights in certain situations.

“While some may think warning others of a speed camera is a charitable thing to do, the reality is that they are impeding police duties and only get themselves in trouble instead.”

The Highway Code is changing in just two days – here’s what you must keep up to date 和.

加, passengers should learn how to do a “Dutch reach” and avoid “dooring” 骑自行车的人.

Keep up to date with all the latest driving tips.