(under subclass 400) Devices in which the articulated vehicles or vehicle sections are provided with an enclosed access opening or sealed passageway of substantial size therebetween to permit passage of humans from one to the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
424, for passenger carrying semitrailers.
SEE OR SEARCH CLASS
105, Railway Rolling Stock,
8.1+, for a railway vehicle, generally, with vestibule structure.
