California Driver Proficiency Form
(a) Notwithstanding Section 408, as used in this section and Sections 34505.5 and 34505.6, 'motor carrier' means the registered owner of a vehicle described in subdivision (a), (b), (e), (f), or (g) of Section 34500, except in the following circumstances:(1) The registered owner leases the vehicle to another person for a term of more than four months. If the lease is for more than four months, the lessee is the motor carrier.(2) The registered owner operates the vehicle exclusively under the authority and direction of another person.
If the operation is exclusively under the authority and direction of another person, that other person may assume the responsibilities as the motor carrier. If not so assumed, the registered owner is the motor carrier. A person who assumes the motor carrier responsibilities of another pursuant to subdivision (b) shall provide to that other person whose motor carrier responsibility is so assumed, a completed copy of a departmental form documenting that assumption, stating the period for which responsibility is assumed, and signed by an agent of the assuming person. A legible copy shall be carried in each vehicle or combination of vehicles operated on the highway during the period for which responsibility is assumed. That copy shall be presented upon request by an authorized employee of the department. The original completed departmental form documenting the assumption shall be provided to the department within 30 days of the assumption.
California Driver Proficiency Form Template

(a) Driver's Record. Motor carriers shall require each driver and each codriver to keep a driver's record pursuant to Section 1213. Motor carriers shall keep the original copies of all drivers' records with any supporting documents, as defined in Section 1201(y), for 6 months. Drivers' records of duty status and all supporting documents shall be made available for inspection immediately upon request by an authorized employee of the department. Drivers' records and/or supporting documents not readily available or accessible shall be made available within 3 business days.