N.Y. Railroad Law § 57-a

§ 57-a. A steam or electric railroad corporation having a franchise\nfrom this state, operating to and from stations within a city of over a\nmillion inhabitants, and owned, controlled or operated by a railroad\ncorporation having a franchise from another state, shall not charge a\nrate per mile within such city in excess of the rates charged for\nsimilar service from such city to stations in an adjacent state, by such\nrailroad corporation having a franchise from another state, whether over\nits own tracks or under an agreement with another railroad corporation.\nThe penalty and remedy provided by section fifty-nine of this chapter\nshall be applicable to a failure to comply with the provisions of this\nsection, and such remedy may be pursued and such penalty may be\nrecovered by a person who shall have paid any such excess rate of fare.\n