The Raritan Valley Line is a commuter rail service operated by New Jersey Transit (NJT) which serves passengers in municipalities in Union, Somerset, and Hunterdon counties in the Raritan Valley region in central New Jersey, United States. The line's most frequent western terminus is Raritan station in Raritan. Some weekday trains continue farther west and terminate at the High Bridge station, located in High Bridge. Most eastbound trains terminate in Newark; passengers bound for New York make a cross-platform transfer. A limited number of weekday trains continue directly to New York.