California Code, Vehicle Code - VEH § 2418.1

For purposes of enforcing the provisions of Section 2418, the department and the State Air Resources Board shall, to the maximum extent possible, conduct vehicle safety and emissions inspections at the California-Mexican border crossings.  Inspections shall be conducted at the Otay Mesa and Calexico commercial vehicle inspection facilities operated by the department and at other random roadside locations as determined by the department, in consultation with the board.  Inspections for safety and emissions shall be consistent with the inspection procedures specified in Title 13 (commencing with Section 2175) of the California Code of Regulations as they pertain to vehicle inspections.