Proposed expansion of the New York City Subway BMT Canarsie Line from Eighth Avenue to Jersey City under the Hudson River. The tunnel under the Hudson would have cost $40,000,000. The extension would have provided access to commuter railroads in New Jersey as most lines converged there, and the lines that didn't would be rerouted to stop there. The RPA also suggested having a parking lot there for access from the Pulaski Skyway and the New Jersey Turnpike. It was suggested that either the New York City Transit Authority, the Port Authority of New York and New Jersey or the Bi-State Metropolitan Rapid Transit Commission would do the
New York – New Jersey Line War border with New York, which was also located on this branch. But where exactly was this elusive branch of the Delaware River? The East New Jersey Board of Proprietors would lead the effort to establish the location of the northern station point because of the importance of this question in establishing title over much of their territory. Without a firm border, how could grants be made with firm titles; more importantly, without firm titles, how could new business and communities be established? The first attempt to establish the location of the northern border of New Jersey was made in 1684.