N.Y. High. Law § 328
The board of supervisors of any county may from time to time provide for lighting public highways, or portions thereof, or bridges, located in such county outside of cities and villages. The initial action of the board shall be in the form of a proposal. The highways, or portions thereof, or bridges to be lighted, and the manner of lighting, shall be set forth in such proposal. Such proposal shall be embodied in a resolution. The lighting of one or more of such highways, or portions thereof, or bridges may be proposed in a single resolution. The board may provide for such lighting if its proposal be so approved. The expense of installing, maintaining and caring for such lights shall be a county charge, and the moneys therefor shall be provided and appropriated in the same manner as for other county expenses. The furnishing of light under this section may be provided for by contract or otherwise, but nothing herein shall be deemed to authorize the board to acquire, construct or establish a lighting plant for such purposes. The installation of lights, fixtures and connections shall be done under the supervision of the county superintendent of highways. The board may provide for the care of such lights in such manner as it may deem proper. The board may, in its discretion, at any time discontinue the lighting of any highway, or portion thereof, or bridge provided for under this section. Notwithstanding the provisions of this section, the county of Monroe may from time to time provide for lighting public highways, streets, or portions thereof, or bridges located in the city of Rochester, subject to the approval of the city council of the city of Rochester. Any installation of lighting pursuant to this section on a state highway shall be subject to the approval of the commissioner.
N.Y. High. Law § 328