(1) In this Part of this Act "excepted persons" means the following persons: (a) any person claiming in respect of injury to himself sustained while he was in or on a vehicle (or a vehicle drawn thereby) to which the relevant document relates, other than a vehicle, or a drawn vehicle, or vehicles forming a combination of vehicles, of a class specified for the purposes of this paragraph by regulations made by the Minister, provided that such regulations shall not extend compulsory insurance in respect of civil liability to passengers to - (i) any part of a vehicle, other than a large public service vehicle, unless that part is designed and constructed with seating accommodation for passengers, or (ii) a passenger seated in a caravan attached to a vehicle while such a combination of vehicles is moving in a public place. (b) any person claiming in respect of injury to person to another person where- (i) in case the injury caused the other person's death the other person would, assuming that the injury had not caused his death, be an excepted person under paragraph (a) of this subsection if he were himself claiming in respect of the injury, and