For years this interlocking tower on the PRR had controlled trains on the NEC and the PA&W heading either to or from the New York and Long Branch Railroad in South Amboy, New Jersey.
In 1976 the government created railroad Conrail assumed operations from Penn Central.
Freight however did not get sent onto the North Jersey Coast Line, it stayed on the NEC.
[1] Today, Amtrak Union Tower formerly controlled the NEC and the approaches from the Perth Amboy and Woodbridge Railroad branch (North Jersey Coast Line).
The traffic it still sees are NJ Transit Rail Operations trains to and from Long Branch, and Amtrak and NJ Transit trains to and from New York City, Trenton and Philadelphia.