Motorbikes and 4x4 vehicles have been banned from a 22-mile stretch of an ancient countryside trail.
Off-road vehicles will be banned from a 22-mile section
New legislation that came into force this month has seen part of The Ridgeway through Oxfordshire and west Berkshire made a "restricted byway".
While walkers, cyclists and horse riders will be able to use that part of the national trail, off-road vehicles will now be forbidden.
In the past temporary bans have been put in place during the winter.
The restricted byway designation has been brought in by a part of the Countryside and Rights of Way Act 2000 that came into force earlier this month.
Any public right of way that was previously termed a "road used as a public path" is now a restricted byway.
Almost 18 miles of the 85-mile trail from near Idstone to beyond Compton is now a restricted byway.
Another 4.5 miles from Britwell Hill, near Watlington, to the A40 is also restricted.
Off-road vehicles will still be able to use sections in Wiltshire and west Berkshire from May to September, as well as a short section in Buckinghamshire.