Competence to drive classes of vehicle: dual purpose vehicles
8.—(1) Subject to paragraph (2), a person who is a member of the armed forces of the Crown may drive a dual purpose vehicle when it is being used to carry passengers for naval, military or air force purposes—
(a)where the vehicle has a maximum authorised mass not exceeding 3.5 tonnes, if he holds a relevant full licence authorising the driving of vehicles included in category B other than vehicles in sub-categories B1 or B1 (invalid carriages),
(b)where the vehicle has a maximum authorised mass exceeding 3.5 tonnes but not exceeding 7.5 tonnes, if he holds a relevant full licence authorising the driving of vehicles included in sub-category C1,
(c)in any other case, if he holds a relevant full licence authorising the driving of vehicles included in category C other than vehicles in sub-category C1.
(2) Where the person is authorised by his licence to drive only motor vehicles included in the relevant category or sub-category having automatic transmission, he may drive only dual purpose vehicles having automatic transmission.