California Code, Health and Safety Code - HSC § 117776

(a) “Trauma scene” means a location soiled by, or contaminated with, human blood, human body fluids, or other residues from the scene of a serious human injury, illness, or death.

(b) For purposes of this section, a location may include, but is not limited to, a physical structure that is not fixed geographically, such as mobile homes, trailers, or vehicles.