N.Y. Lien Law § 6
Any person who shall hereafter perform any labor for a railroad corporation shall have a lien for the value of such labor upon the railroad track, rolling-stock and appurtenances of such railroad corporation and upon the land upon which such railroad track and appurtenances are situated, by filing a notice of such lien in the office of the clerk of any county wherein any part of such railroad is situated, to the extent of the right, title and interest of such corporation in such property, existing at the time of such filing. The provisions of this article relating to the contents, filing and entry of a notice of a mechanic's lien, and the priority and duration thereof, shall apply to such liens. A copy of the notice of such lien shall be personally served upon such corporation within ten days after the filing thereof in the manner prescribed by the justice court act for the service of summons in actions in justices' courts against domestic railroad corporations.
N.Y. Lien Law § 6