A person propelling a bicycle or moped may ride only on or astride a permanent and regular seat attached to the bicycle or moped. This requirement does not apply to a motorized scooter.
Mont. Code Ann. § 61-8-603
Riding on bicycles, mopeds, or motorized scooters
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.