Originally Posted by sodave
ATC's are definitely not allowed as they can't be registered.
No, 2-wheeled dirt bikes and 3-wheeled ATCs can still be legally registered as ATVs in New York State. I think you can even legally register an Argo 8X8 as an ATV in New York State.
3-wheeled ATCs are no longer legal for AMA-sanctioned and insured events though.