A vehicle displaying USS Montana specialty license plates and located for more than 1 month in the state that contains the home port of the USS Montana is subject to that state's laws regarding safety inspections and emissions testing.
Mont. Code Ann. § 61-3-344
Out-of-state USS Montana vehicles -- compliance with local state safety and emissions laws
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.