N.Y. Comp. Codes R. & Regs. tit. 17, § 150.13
(b) A sign will be considered to be an on-premises sign if it meets the following requirements:
(3) In order to be classified as an on-premises sign, such sign must meet the following premises test:
(ii) The following will not be considered to be a part of the premises on which the activity is conducted, and any signs located on such land will be considered “off-premises” advertising:
(iii) Where the sign site is located at or near the end of a narrow strip contiguous to the advertised activity, the sign site shall not be considered part of the premises on which the activity being advertised is conducted. A narrow strip shall include any configuration of land which is such that it cannot be put to any reasonable use related to the activity other than for signing purposes. In no event shall a sign site be considered part of the premises on which the advertised activity is conducted if it is located upon a narrow strip of land:
(4) In order to be classified as an on-premises sign, such sign must meet the following purpose test:
(c) Under section 86 of the Highway Law, on-premises signs located within a protected area must also meet the following criteria:
(1) If the sign is located more than 50 feet from the advertised activity, such sign shall be registered in accordance with section 150.15 of this Part, notwithstanding the provision of that section exempting on-premises signs from registration. Such sign shall not exceed 20 feet in length, width or height, or 150 square feet in total area, including border and trim but excluding supports. Not more than one such sign advertising the sale or lease of the same property may be permitted in such a manner as to be visible to traffic proceeding in any one direction on any interstate highway. Not more than one such sign, visible to traffic proceeding in any one direction on any interstate highway and advertising activities being conducted upon the real property where the sign is located, shall be permitted more than 50 feet from the advertised activity. For the purposes of this section, the 50-foot distance shall be measured as follows:
(2) Except for signs which are closer than 50 feet distant from the advertised activity, no such sign shall be permitted which: