Newark–World Trade Center is a rapid transit service operated by the Port Authority Trans-Hudson (PATH). It is colored red on the PATH service map and trains on this service display red marker lights. This service operates from Pennsylvania Station in Newark, New Jersey, by way of the Downtown Hudson Tubes to the World Trade Center in Lower Manhattan, New York City, New York. Operating 24 hours a day, the trip takes minutes to complete. Much of the service's Newark-Jersey City leg is in very close proximity to the Northeast Corridor used by Amtrak intercity trains and NJ Transit commuter trains; the route crosses over the Newark Dock Bridge used by intercity and commuter trains traveling between Newark and New York. For these reasons, PATH is legally reckoned as a commuter railroad under the jurisdiction of the Federal Railroad Administration even though it has long operated as a rapid transit system. This is the only PATH route with significant above-ground sections; the Newark–Jersey City leg operates on elevated track, in open cuts, or at grade level. History H&M operation The Newark–World Trade Center service originated as the Grove Street–Hudson Terminal service operated by the Hudson and Manhattan Railroad (H&M). It started operating between Grove Street in Jersey City, New Jersey and Hudson Terminal in Manhattan, beginning September 6, 1910. The line was extended to Manhattan Transfer in Harrison on October 1, 1911, and then to Park Place in Newark on November 26 of that year. A stop at Summit Avenue (now Journal Square), located between Grove Street and Manhattan Transfer, opened on April 14, 1912, as an infill station on the Newark–Hudson Terminal line. Another infill station at Harrison opened on March 6, 1913. In June 1937, the branch to Park Place Station was closed, and the Newark–Hudson Terminal line was rerouted to Newark Penn Station. The Manhattan Transfer station was also closed, and the Harrison station was relocated. PATH operation The H&M was succeeded by Port Authority Trans-Hudson (PATH) in 1962. The Hudson Terminal station was replaced by the World Trade Center station in 1971 during construction of the World Trade Center. On April 29, 1996, three trips each weekday began running express on the Newark–World Trade Center service, cutting running time by minutes. The express service skipped all intermediate stops and ran only in the morning toward World Trade Center. On October 27, 1996, express Newark–World Trade Center service