Cal. Veh. Code § 11713.15
(a)
(2) If nine or fewer dealers are participating in the show, a temporary branch license may only be issued to a dealer under this subdivision if the location of the show is 50 miles or less from that dealer’s established place of business or permanent branch location.
Each dealer described in this paragraph shall certify in his or her application for a temporary branch license that the show location is 50 miles or less from his or her established place of business or permanent branch location.
(3) A temporary branch license may be issued to a dealer for purposes of participating in a show if all of the following conditions exist:
(b)
(d) Paragraphs (2) and (3) of subdivision (a) and subdivision (b) do not apply to a dealer participating in an annual show sponsored by a national trade association of recreational vehicle manufacturers, if the show is located in a county with a population of 9,000,000 or more persons, or is at a location within 30 miles from the prior approved location of the show, and at least 10 manufacturers are participating in the show. If the dealer is otherwise eligible to participate in the show, the department shall issue a temporary branch license if all the following occur: