No person or persons may occupy a housetrailer while it is being moved upon a public highway unless the trailer is of a semitrailer design where some part of its own weight and that of its cargo rests upon or is carried by its towing unit through the use of a fifth-wheel type trailer hitch mounted on no less than a one-half ton rated truck.
Mont. Code Ann. § 61-8-367
Riding in housetrailers
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.