The Chemical Coast is a section of Union and Middlesex counties in New Jersey located along the shores of the Arthur Kill, across from Staten Island, New York. The name is taken from the Conrail Chemical Coast Line, an important component in the ExpressRail system serving marine terminals in the Port of New York and New Jersey.

The Staten Island Railway (SIR) is a rapid transit line in the New York City borough of Staten Island. It is owned by the Staten Island Rapid Transit Operating Authority (SIRTOA), a subsidiary of the Metropolitan Transportation Authority, and operated by the New York City Transit Authority Department of Subways. SIR operates 24 hours a day, seven days a week, providing local service between St. George and Tottenville, along the east side of the island. There is currently only one line on the island, and there is no direct rail link between the SIR and the New York City Subway system, but SIR riders do receive a free transfer to New York City Transit bus and subway lines, and the line is included on official New York City Subway maps. Commuters on the railway typically use the Staten Island Ferry to reach Manhattan. The line is accessible from within the Ferry Terminal, and most of its trains are timed to connect with the ferry. In 2023, the system had a ridership of 6,151,400, or about 19,500 per weekday as of the fourth quarter of 2023.