POLICE have pledged a spring crackdown to curb the seasonal increase in off-road motor biking.

A sharp rise in the menace of motorcycles making life a misery for pedestrians, and other users of open land, is expected on the run up to Easter.

Durham Police expects to field mounting complaints over off-road biking activities.

In response, the force's motorcycle section has promised to mount daily patrols in known trouble-spots.

Sgt Bob Brown, who heads the motorcycle section, said off-road bikers pose year-round problems.

"But, as the weather improves and the school holidays loom, we expect public complaints about noise and environmental damage to jump quite considerably," he said. "The vast majority who take off on 'field bikes' are breaking the law.

"They must have permission from the owners of the land they ride on and it's vitally important they wear the right protective gear, including a crash helmet.

"For many, any piece of open ground seems to do, whether it's park land, football pitches, walkways or agricultural land."

He said the number of qualified police off-road specialists has more than doubled as the force prepares to launch its crackdown.

But, insisting that police are anxious not to be seen as mere 'killjoys,' he said they are happy to direct genuine enthusiasts to clubs where they can ride legally. More than 500 motor bikes were stolen across the force area last year, many to be stripped down and 'cannibalised' to sell on parts for off-road bikes.

The motorcycle section also launched more than 100 operations, seizing 158 machines.

Sgt Brown added: "Anyone found riding legitimate machines in illegal circumstances will be issued an official written warning.

"If they re-offend within 12 months their bikes will be impounded under the newly enacted Police Reform Act.

"Bikes with suspect parts will be seized immediately, as will those in a dangerous condition," said Sgt Brown.

Details of legitimate clubs, or land earmarked for off-road biking, is available from the motorcycle section on (0191) 3864929.