All vehicles exempt from the payment of registration fees shall be registered as otherwise required by this code by the person having custody thereof, and he shall display upon the vehicle a license plate bearing distinguishing marks or symbols, which shall be furnished by the department free of charge.
Cal. Veh. Code § 4001
Vehicles Subject to Registration
Enacted by Stats. 1959, Ch. 3.
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.