California Code, Vehicle Code - VEH § 27700

(1) One or more brooms, and the driver of the tow truck engaged to remove a disabled vehicle from the scene of an accident shall remove all glass and debris deposited upon the roadway by the disabled vehicle which is to be towed.

(2) One or more shovels, and whenever practical the tow truck driver engaged to remove any disabled vehicle shall spread dirt upon that portion of the roadway where oil or grease has been deposited by the disabled vehicle.

(3) One or more fire extinguishers of the dry chemical or carbon dioxide type with an aggregate rating of at least 4-B, C units and bearing the approval of a laboratory nationally recognized as properly equipped to make the approval.