Most eastbound trains terminate in Newark; passengers are able to transfer to NJ Transit using a combined ticket or PATH (rail system) and Amtrak to New York City.

Historically, CNJ trains ran on this line, as part of its Lehigh-Susquehanna Division, from Scranton, Wilkes-Barre, Allentown, Bethlehem and Easton in eastern Pennsylvania through Elizabeth and Bayonne to Jersey City.

[5] This station, which was also served by Reading Company trains to Philadelphia and B & O service to Washington, D.C., and beyond, had connections by chartered bus or ferry into Manhattan.

This original "pilot project" schedule has been subsequently expanded to include additional trains, but is limited to off-peak hours due to capacity issues in the Hudson River tunnels.

[10] In September 2018, all Raritan Valley Line service was truncated to Newark Penn Station to allow for positive train control installation.

With the initiation of select, direct, service to New York Penn Station on the Raritan Valley Line in March 2014, dual-mode Bombardier ALP-45DP locomotives (combination diesel and electric power) were added to the RVL rolling stock to incorporate the "one seat ride" between Raritan/High Bridge and Penn Station in New York.

This is also one of four fueling facilities for NJT locomotives, the other three being Hoboken Terminal, Port Morris, and the Meadows Maintenance Complex.

In May and June 2018, NJ Transit leased 10 MARC coaches to be exclusively operated on the Raritan Valley Line.

[13] Then, in November 1989, the New Jersey Department of Transportation (NJ DOT) severed the rail line between Alpha and Phillipsburg during construction of I-78.

Congressman Bob Franks, sought cost-effective ways to improve mobility, reduce highway congestion, and increase transit ridership along the Raritan Valley Line.

[15] In addition, real estate developers have touted former industrial hub Phillipsburg as an excellent candidate for restored commuter rail service, saying "P'burg.

.a good candidate for rail service..."[16] NJ Transit has been responsive to the idea, and initiated an environmental impact statement.