N.Y. Comp. Codes R. & Regs. tit. 15, § 79.2
(b) Except as provided in paragraph (3) of this subdivision, every motor vehicle (including a trailer, other than a mobile home trailer) sold or transferred for use on the public highways of this State by a dealer registered under section 415 of the Vehicle and Traffic Law to any person other than another such registered dealer, must be inspected and bear a valid certificate of inspection prior to delivery to the purchaser or transferee.
(c) Every motor vehicle must be inspected and bear a valid certificate of inspection before an original registration, reregistration or renewal registration for that motor vehicle may be issued, however, an original registration or reregistration or renewal may be issued without an inspection having been made if the applicant for such registration obtains a 10-day time extension certificate (form VS-1077) for the motor vehicle which is to be registered. A vehicle sold as junk is not entitled to a 10-day time extension or a temporary registration and must be inspected before an original or reregistration is issued. Upon the casual (non-dealer) sale or transfer of a motor vehicle, any certificate of inspection issued prior to the date of the sale or transfer shall be deemed invalid.
Note:
A motor vehicle may be inspected as often as the owner may choose, so long as said vehicle is inspected at least once in any given 12-month period.
(d) The following are excluded from the term motor vehicle for purposes of this section and need not be inspected:
(f) The following vehicles, which are subject to safety inspection, are exempt from the OBD II and low-enhanced emissions portion of that annual inspection:
(h) The following vehicles, which may be subject to safety inspection, and are registered in the NYMA, are exempt from the diesel emissions portion of that inspection: