N.Y. Comp. Codes R. & Regs. tit. 21 § 1085.1 : Miscellaneous — Metropolitan Transportation Authority — Rules and Regulations Governing the Conduct and Safety of the Public — Rules And Regulations Governing The Conduct And Safety Of The Public In The Use Of The Metro-north Commuter Railroad Company Terminals, Stations And Trains — Authorization and purpose

(a) Metro-North Commuter Railroad Company ("Metro-North") is a public benefit corporation and an independent subsidiary of the Metropolitan Transportation Authority ("MTA"). As such, Metro-North is empowered by the New York State Public Authorities Law to make rules and regulations governing the conduct and safety of the public in the use and operation of its terminals, stations and trains. Public Authorities Law, sections 1265(5), (14) and 1266(4) and (8).
(b) Metro-North promulgates the rules set forth below to promote safety, to facilitate the proper use of Metro-North terminals, stations and trains, and to protect its facilities and its customers, its employees and the public. In addition to these rules, all applicable provisions of the Penal Law or any other applicable law shall continue to be enforceable.
(c) These rules may be amended or added to from time to time at the sole discretion of Metro- North and in accordance with law.

N.Y. Comp. Codes R. & Regs. Tit. 21 § 1085.1