Cal. VEH § 34060

The commissioner shall provide for the establishment, operation, and enforcement of random on- and off-highway inspections of cargo tanks and hazardous waste transport vehicles and containers. The commissioner shall also provide training in the inspection of cargo tanks and hazardous waste transport vehicles and containers to employees of the department whose primary duties include the enforcement of laws and regulations relating to commercial vehicles and who, thereafter, are required to perform random inspections of cargo tanks and hazardous waste transport vehicles and containers to determine whether or not the cargo tanks and hazardous waste transport vehicles and containers are designed, constructed, and maintained in accordance with the regulations adopted by the commissioner pursuant to this code and Chapter 6.5 (commencing with Section 25100) of Division 20 of the Health and Safety Code.