CALIFORNIA CODE23225. ... (c) This section shall not apply to the living quarters of ahousecar or camper.23226. ... (c) This section shall not apply to the living quarters of ahousecar or camper.
Drinking in Motor Vehicle23221. (a) No driver shall drink any alcoholic beverage while in a motor vehicle upon a highway.(b) No passenger shall drink any alcoholic beverage while in a motor vehicle upon a highway.Amended Sec. 2, Ch. 723, Stats. 1999. Effective January 1, 2000.
If they are, half of the music business buses running the roads are in trouble! haha..
I am pretty sure I recall that there is a legal difference in that matter between a commercial vehicle with a professional driver and a RV. On a commercial vehicle with a professional driver, passengers can drink. I assume this would include leased/rented limos and coaches with professional drivers (hence there are actually a few celebrities that haven't been to jail ). But in a private RV (which would include motorhome licensed bus conversions) the same laws that apply to autos are in effect. The latter being, no open containers in the vehicle.
23229. (a) ... Sections 23221 and 23223 do not apply to ... the living quarters of a housecar or camper
As buswarrior points out, when a bus is hauling people from or to a paid performance, it is in commercial service.