The types of vehicles not permitted to use the right hand (offside) lane on a motorway, which has three or more lanes open for use by traffic travelling in the same direction are:
- a goods vehicle having a maximum laden weight exceeding 7.5 tonnes,
- a goods vehicle having a maximum laden weight exceeding 3.5 tonnes but not exceeding 7.5 tonnes, which is required to be fitted with a speed limiter
- a passenger vehicle which is constructed or adapted to carry more than eight seated passengers in addition to the driver the maximum laden weight of which exceeds 7.5 tonnes;
- a passenger vehicle which is constructed or adapted to carry more than eight seated passengers in addition to the driver the maximum laden weight of which does not exceed 7.5 tonnes, which is required to be fitted with a speed limiter.
- a motor vehicle drawing a trailer
- a vehicle which is a motor tractor, a light locomotive or a heavy locomotive.
There are exceptions to this rule, which are:
- when it is necessary for the vehicle to be driven to enable it to pass another vehicle which is carrying or drawing a load of exceptional width.
- for a vehicle to change lane during a period when it would not be reasonably practicable for it to do so without involving danger of injury to any person or inconvenience to other traffic.