Whenever motor vehicles and other vehicles are operated in combination during the time that lights are required, any lamp need not be lighted which, by reason of its location on a vehicle of the combination, would be obscured by another vehicle of the combination.
Wyo. Stat. Ann. § 31-5-918
Vehicles in combination
Official source: Wyoming Legislature. Reproduced from public-domain Wyoming statutes; confirm against the official source for the current text. Not legal advice.