6 Gauge and motive power
1 The railway shall be operated on a gauge of 1.435 metres (four feet eight and one half inches) and the motive power shall be diesel, steam or internal combustion or such other motive power as the Secretary of State may approve in writing.
2 Nothing in this Order shall authorise the Association to use electrical power as motive power on the railway unless such power is obtained from storage batteries or from a source of generation entirely contained in and carried along with the engines and carriages.
3 If electrical power is used as motive power on the railway such electrical power shall not be used in such a manner as to cause or be likely to cause any interference with any telecommunications apparatus as defined in Schedule 2 to the Telecommunications Act 1984 or with telecommunication by means of any such apparatus.
1984 c. 12.