N.Y. Comp. Codes R. & Regs. tit. 21 § 1097.12
No person shall bring into or carry in a terminal, station or train any explosives, acids, inflammables, compressed gases or articles or materials having or capable of producing strong offensive odors, explosion or fire, or articles or materials likely to endanger persons or property. No person shall bring or cause to be brought into or kept in a terminal, station or train any signal flare or any container filled with or which has been emptied or partially emptied of oil, gas petroleum products, paint or varnish. When authority is given to bring into or keep at a terminal, station or train any such articles or materials it shall be conditioned upon the use of appropriate receptacles in rooms or areas approved therefor by the superintendent in the case of Pennsylvania station or the director of passenger services in the case of any other terminal or station or any train. It shall not be a violation of this regulation for an individual in transit to bring or cause to be brought into a terminal, station or train any material otherwise prohibited by this section, provided that such material is still under its original manufacturer's seal and complies with all applicable laws and regulations. Bringing in or keeping at a terminal, station or train, without authority, gasoline or other motor fuel contained in tanks permanently attached to vehicles and not contained under pressure shall not be a violation of this regulation.
N.Y. Comp. Codes R. & Regs. Tit. 21 § 1097.12