Section 34005 Of Article 1. Administration From California Vehicle Code >> Division 14.7. >> Article 1.

. The provisions of this division shall not apply to a trap wagon or spray rig when empty or when transporting not more than 1,000 gallons of flammable liquids or combustible liquids to accomplish the basic function of such vehicle. For the purpose of this section, "trap wagon" and "spray rig" have the same meaning of those terms as defined in Section 36005.