The Trenton line usually has two push-pull electric-locomotive-hauled trains on the morning express runs and two on the evening express runs. Each train is usually made up of 6 coach trailers made by Bombardier with AEM-7 or ALP-44 locomotives hauling them.
Those wishing to travel from Philadelphia to New York could formerly have taken Amtrak's Clocker service, but can still take its Northeast Regional. The Trenton Line service is coordinated with New Jersey Transit's (NJT) Northeast Corridor Service. This has proven to be a popular option for people travelling between Philadelphia and New York City; although the trip time is far more lengthy than Amtrak Regional service, the cost is roughly half of what Amtrak charges. NJT offers through ticketing from stations along the NEC to SEPTA stations, and NJT maintains a Ticket Vending Machine (TVM) at the SEPTA concourse in the 30th Street Station that sells the joint NJT/SEPTA tickets. However, while joint NJT/SEPTA tickets can be purchased at NJT staffed stations, they cannot at most SEPTA staffed stations, with the exception of three Center City Philadelphia stops that have added NJT ticketing service at one window each.
On July 25, 2010 SEPTA renamed the service from the R7 Trenton to simply the Trenton Line as part of system-wide service change that drops the R-number naming and makes the Center City stations the terminus for all lines. This also ended the combined R7 Trenton/R7 Chestnut Hill East service, although most weekday trains still continue to Chestnut Hill East.