A NATIONAL park's rangers have warned they will be joining forces with the police in a clampdown on off-road vehicles being used illegally.

People walking in parts of the Yorkshire Dales say their enjoyment of the countryside has been ruined by the irresponsible use of vehicles on public rights of way.

Motorbikes have been seen on bridleways closed to motorised traffic, while drivers of 4x4 vehicles have been spoken to about churning up footpaths.

"One of the constants of everyday life is traffic and the noise, intrusion and stress this brings. We believe there should be areas where people can get away from it all and experience the peace and tranquillity of the countryside,'' said the national park's head of park management, Jon Avison. "The presence of recreational off-road vehicles in the Dales precludes this happening in many cases."

National park rangers and police officers will now arrange regular patrols in areas where incidents have been reported.

Sergeant Steve Breen said: "We are not opposed to the lawful and responsible use of off-road vehicles but action will be taken against those who use their vehicles in an anti-social or careless manner, or in places where vehicles are not permitted.

"This includes bridleways and footpaths, common land, and private land where the express permission of the landowner has not been obtained. Offenders risk substantial fines, and under new legislation introduced by the Government, they risk having their vehicles confiscated.''