22.—(1) A doorway (other than an external doorway in the side or the end of a regulated rail vehicle) through which a disabled person in wheelchair must pass to reach a wheelchair space, a wheelchair-compatible sleeping compartment, or the nearest toilet or telephone to that space or compartment shall be not less than 850 millimetres wide.
(2) A doorway in the end of a vehicle through which a disabled person in a wheelchair must pass to reach a wheelchair space, a wheelchair-compatible sleeping compartment, or the nearest toilet or telephone to that compartment or space shall be not less than 750 millimetres wide.