V C Section 8057 Fleet Records
8057. Any person issued fleet registration pursuant to Article 9.5 (commencing with Section 5301) of Chapter 1 or this article shall:
(a) Maintain fleet records that support the reported mileage, cost, and declared gross or combined gross vehicle weight of all vehicles. Any registrant whose application for apportioned registration has been accepted shall preserve the mileage records on which the application is based, including copies of all permits, for a period of three years after the close of the registration year. Vehicle cost and declared gross or combined gross weight records shall be retained for four years after the close of the registration year in which the vehicle was deleted.
(b) Make fleet records available to the department at its request for audit to verify the accuracy of the records. In the event the records are not made available within 30 days of the request, the department may assess full California fees and penalties and may suspend or cancel apportioned registration privileges. The registrant may be required to reimburse the department auditor per diem and travel expenses under certain conditions as determined by the director.