California Code, Vehicle Code - VEH § 34520.5

(a) All employers of drivers who operate paratransit vehicles, and the drivers of those vehicles, who are not otherwise required to participate in a testing program of the United States Secretary of Transportation, shall participate in a program consistent with the controlled substances and alcohol use and testing requirements of the United States Secretary of Transportation as set forth in Part 382 (commencing with Section 382.101), Part 653 (commencing with Section 653.1), or Part 654 (commencing with Section 654.1) of Title 49 of the Code of Federal Regulations.

(b) Section 34520 is applicable to any controlled substances or alcohol testing program undertaken under this section.

(c) The employer of a paratransit vehicle driver shall participate in the pull notice system defined in Section 1808.1.