91.—(1) The requirements of section 34 of the 1972 Act with regard to the employment of drivers and attendants shall not apply in respect of the following vehicles—
(a)an articulated vehicle;
(b)an agricultural motor vehicle which is drawing an agricultural trailer or an agricultural trailed appliance;
(c)a trailer with not more than two wheels drawn by a motor car or a motor cycle or a four-wheeled trailer having two close-coupled wheels on each side drawn by a motor car;
(d)a motor tractor drawing any—
(i) closed trailer specially constructed and used for the conveyance of meat between docks and railway stations or between wholesale markets and docks or railway stations;
(ii) machine or implement used for the purpose of the maintenance, repair or cleansing of roads; or
(iii) refuse vehicle;
(e)a works truck drawing any works trailer where the unladen weight of each vehicle does not exceed 1525 kg;
(f)a motor vehicle drawing a trailer which has no brakes other than a parking brake and brakes which automatically come into operation on the overrun of the trailer;
(g)a road roller;
(h)a motor vehicle belonging to the Secretary of State for Defence and being used for naval, military or air force purposes drawing a trailer fitted with brakes which can be applied by the driver of the drawing vehicle;
(i)a motor vehicle drawing a broken down vehicle, whether or not in consequence of a breakdown, in such a manner that the broken down vehicle cannot be steered by its own steering gear;
(j)a motor vehicle drawing another vehicle in the exercise of a statutory power of removal in such a manner that the vehicle being so drawn cannot be steered by its own steering gear;
(k)a motor vehicle which is drawing a towing implement not attached to any other vehicle; or
(l)a motor vehicle drawing a trailer or trailers where every such trailer is fitted with power-assisted or power-operated brakes which can be operated by the driver of the drawing vehicle and are not rendered ineffective by the non-rotation of the engine of the drawing vehicle—
(i) where one such trailer is drawn; or
(ii) where two or more such trailers are drawn, if one attendant is carried on either the drawing vehicle or a trailer for the purpose of attending to the trailers.
(2) The requirements of the said section 34 with regard to the employment of persons to drive or attend a locomotive whilst being driven on a highway shall not apply in the case of a locomotive propelled by the combustion of liquid fuel or by electrical power, whether or not the locomotive is drawing a trailer or trailers.
(3) The provisions of this regulation shall not be treated as prejudicing the operation of any provision of regulation 82 in so far as it provides, in relation to the use of a vehicle on a road, for compliance with the conditions specified in paragraph 2 of Schedule 12 (which relates to the employment of persons in attending to vehicles and their load).