Public Utilities Code
4007. (a) When the department issues a carrier identification number pursuant to Section 34507.5 of the Vehicle Code to a private carrier of passengers, it shall inform the carrier of the provisions of this chapter and the requirement that the carrier register with the Public Utilities Commission.
(b) The department shall periodically, but not less frequently than quarterly, transmit to the commission a list of the persons, firms, and corporations identified as private carriers of passengers to whom it has issued a carrier identification number. Upon receipt of the list, the commission shall notify the private carriers of passengers of the registration requirements and of the penalties for failure to register.