Use of gas-fired appliances when a vehicle is in motion
111.—(1) Subject to paragraph (2), this regulation applies to motor vehicles and trailers.
(2) Paragraphs (3) and (4) do not apply to a vehicle constructed or adapted for the conveyance of goods under controlled temperatures.
(3) A person shall not use, or cause or permit to be used, in a vehicle to which this paragraph applies, while the vehicle is in motion on a road, a gas-fired appliance except—
(a)a gas-fired appliance which is fitted to engineering plant while the plant is being used for the purposes of the engineering operations for which it was designed;
(b)a gas-fired appliance which is permanently attached to a bus, provided that any appliance for heating or cooling the interior of the bus for the comfort of the driver and passengers does not expose a naked flame on the outside of the appliance; or
(c)in any other vehicle, a refrigerating appliance or an appliance which does not expose a naked flame on the outside of the appliance and which is permanen tly attached to the vehicle and designed for the purpose of heating any part of the interior of the vehicle for the comfort of the driver and passengers.
(4) A person shall not use, or cause or permit to be used, in a vehicle to which this paragraph applies, while the vehicle is in motion on a road, a gas-fired appliance to which—
(a)paragraph (3)(a) refers, unless the appliance complies with the requirements specified in paragraphs 12 and 13 of Schedule 5 and the gas system to which it is attached complies with the requirements specified in paragraphs 2 to 9 and 15 of Schedule 5; or
(b)paragraph (3)(b) refers, unless the appliance complies with the requirements specified in paragraphs 12, 13 and 14 of Schedule 5 and the gas system to which it is attached complies with the requirements specified in paragraphs 2 to 9, 11 and 15 of Schedule 5; or
(c)paragraph (3)(c) refers, unless the appliance complies—
(i)if it is fitted to a motor vehicle, with the requirements specified in paragraphs 12, 13 and 14 of Schedule 5; and
(ii)in any other case, with the requirements specified in paragraphs 12 and 13 of Schedule 5;
and the gas system to which the appliance is attached complies with the requirements specified in paragraphs 2 to 9 and 15 of Schedule 5.
(5) A person shall not use, or cause or permit to be used, in a vehicle to which this regulation applies which is in motion on a road, a gas-fired appliance unless it is fitted with a valve which stops the supply of gas to the appliance if the appliance fails to perform its function and causes gas to be emitted.