N.Y. Veh. & Traf. Law § 419
Notwithstanding any other provision of this article to the contrary, a recreational vehicle dealer licensed to do business as such in another state or jurisdiction may participate in a vehicle show or exhibit which has, when it opens to the public, at least a total of fifty dealers from both this state and outside this state manning recreational vehicle manufacturer displays if the show or exhibit is trade-oriented and is predominantly funded by recreational vehicle manufacturers. All of the participating dealers who are not licensed by this state must be from a state contiguous to this state which permits recreational vehicle dealers licensed as such in this state to participate in like shows or exhibits in that state under conditions substantially equivalent to the conditions which are imposed upon dealers from that state who participate in recreational vehicle shows or exhibits in this state and are duly licensed and authorized by their state of residence to sell recreational vehicles. Except as otherwise provided, nothing herein shall be deemed to waive or alter any other provision of law, rule or regulation. For the purpose of this section, the term "recreational vehicle" shall have the same meaning as "house coach" as such term is defined in section one hundred nineteen of this chapter.
N.Y. Veh. and Traf. Law § 419