N.Y. Comp. Codes R. & Regs. tit. 17 § 150.3
In accordance with subdivision 8 of section 88 of the Highway Law, any sign which is maintained in violation of the outdoor advertising control statutes, or the regulations of this Part, is hereby declared to be a public nuisance. The Commissioner of Transportation shall give 30 days' notice, by registered mail, to the owner of the property upon which such sign is located and to the owner of such sign to remove the same if it is a prohibited sign, or to cause it to conform to the requirements of the outdoor advertising control statutes or the provisions of this Part if such conformance is possible. The owner of such sign shall, within such 30-day period, remove the same if it is a prohibited sign. The owner of the sign shall bring the sign into compliance if it is possible to conform with the requirements of the outdoor advertising control statutes or the provisions of this Part within such 30-day period. If the owner of the property or of the sign fails to act within 30 days as required in the notice, the Commissioner of Transportation, or his duly authorized agent, shall cause the removal of such sign at the expense of the owner of the property or the owner of the sign.
N.Y. Comp. Codes R. & Regs. Tit. 17 § 150.3