2015 New York Laws
VAT - Vehicle & Traffic
Title 11 - REGISTRATION OF SNOWMOBILES, MOTORBOATS AND LIMITED USE VEHICLES
Article 47 - (2220 - 2231) REGISTRATION OF SNOWMOBILES
2223 - Display of registration numbers.

 2223. Display  of  registration numbers. 1. The registration numbers
  assigned to a snowmobile shall be displayed on the vehicle at all  times
  in  such  manner  as  the commissioner may, by regulation, prescribe. No
  number  other  than  the  number  assigned  to  a  snowmobile   by   the
  commissioner or the identification number of the registration in another
  state  should be painted, attached or otherwise displayed on either side
  of the cowling,  except  that  racing  numbers  on  a  snowmobile  being
  operated  in  special  events, approved by the commissioner of parks and
  recreation, may be temporarily displayed for the duration of the race.
2. Dealer demonstrator  registration  numbers  shall  conform  to  the
  requirements  set  forth  in  subdivision  one  of this section with the
  exception that the numbers assigned may be printed upon or attached to a
  removable plaque or plaques to be temporarily but firmly affixed to  the
  snowmobile being demonstrated or tested.
3.  Numbers  issued  to  dealers  and manufacturers for the purpose of
  demonstration or testing shall be used exclusively  for  these  purposes
  and no other use is permitted.