South Coast Rail is a project to build a new southern line of the MBTA Commuter Rail system along several abandoned and freight-only rail lines. The line has been planned to restore passenger rail service between Boston and the cities of Taunton, Fall River, and New Bedford, via the towns of Berkley, and Freetown, on the south coast of Massachusetts. It would restore passenger service to some of the southern lines of the former Old Colony Railroad and the New York, New Haven and Hartford Railroad.