Motorists can be fined if they 'help out' fellow drivers while out on the road.
This can include flashing headlights to warn other drivers about police speed cameras.
Drivers could face up to £1,000 fine for 'assisting' others on the road in this way, according to a new study and as reported by Birmingham Live.
The Highway Code states drivers should use their headlights "only to let other road users know that you are there" and not to attempt "to convey any other message".
If drivers are warning others about a police speed trap, they could be in breach of section 89 of the Police Act 1997.
This law states that it's an offence to "wilfully obstruct a constable in the execution of his/her duty".
And the warning does not just relate to the road itself - but social media too.
As well as flashing your lights to warn other drivers, this could also apply if you post the location of a police speed trap on social media channels, like Facebook, Twitter and Instagram.
Social media groups share traffic details, like road accidents, delays and queues, as well as tell each other parking tips and more.
But drivers should be cautious and keep information about where they have seen speed traps to themselves, rather than being tempted to post the details online or on social media.
