Highway – Classification. The inspector, in having made a modification order concerning a definitive map and statement, such that a motorbike or other mechanically propelled vehicle could no longer lawfully travel the whole length of a lane, had made an order which was founded upon a clear error of law and was not within the powers under the Wildlife and Countryside Act 1981 s 53. The Administrative Court further held that the error had created a perverse result, such that it could not be overlooked.