The director may issue special permits, which shall not be in force more than ninety (90) days, authorizing the operation of a combination of motor vehicles on the highways of the state consisting of more than three (3) single units. The permits shall be issued for the purpose of testing the use of such units under actual operating conditions on the highways. The permits shall be issued under the supervision of and under conditions including time, route, equipment and speed determined by the director.
Wyo. Stat. Ann. § 31-18-807
Special permits for certain combinations of vehicles
Official source: Wyoming Legislature. Reproduced from public-domain Wyoming statutes; confirm against the official source for the current text. Not legal advice.