California Code, Vehicle Code - VEH § 34505.8

(a) A charter-party carrier of passengers engaged in charter bus transportation shall ensure that the driver of a vehicle as described in paragraph (1) of subdivision (b) of Section 5363 of the Public Utilities Code that is designed to carry 39 or more passengers shall instruct or play a video for all passengers on the safety equipment and emergency exits on the vehicle prior to the beginning of any trip and provide each passenger with written or video instructions that include, at a minimum, a demonstration of the location and operation of all exits, including emergency exits, the requirement to wear a seatbelt, if available, and that not wearing a seatbelt is punishable by a fine.

(b) Notwithstanding any other law, no later than July 1, 2018, the department shall adopt standards and criteria for the implementation of the safety requirements specified in this section.

(c) This section does not alter or affect the requirements of the Passenger Charter-party Carriers' Act (Chapter 8 (commencing with Section 5351) of Division 2 of the Public Utilities Code).

(d) The amendments to this section as added by the act that added this subdivision  1 shall be operative on July 1, 2018.