The Regional Rail System operates throughout Chester, Delaware, Montgomery, Bucks, and Philadelphia Counties in Pennsylvania, New Castle County in Delaware (Wilmington/Newark Line), and also Mercer County in New Jersey (West Trenton and Trenton Lines). The fleet consists of nine (9) different models of rail equipment that are in revenue service.
The Silverliner IV fleet is the current backbone of the SEPTA regional rail fleet. Due to their age and dynamic braking system, these units are the primary trains that SEPTA uses on their rail routes during the weekends.
The push pull fleet is used on both Limited and express runs on the West Trenton, Elwyn, Paoli/Thorndale, Wilmington/Newark, DE and the Trenton lines to their full efficiency; These trains usually consists of 5-7 Comet I/II/III cars. The Comet I fleet was recently obtained from NJT and operates the Pennypack Limited or Neshaminy Limited on the West Trenton Line in the morning and evening. The AEM-7 fleet was built in 1987, whereas the single ALP-44 unit was built in 1996. For more information on their assignments .
Picture taken by TRANSIT_FREAK
#701-738 double ended and 801-882 sngle ended cars has arrived on SEPTA property - order is completed!! as of March 21st 2013.
| Year | Manufacturer | Model | Fleet |
| 2010-2011 | Rotem | Silverliner V Double End | #701-738 |
| 2010-2011 | Rotem | Silverliner V Single End | #801-882 |
There are a total of 47 Double End and 184 Single End cars in service
Single end cars operate in married pairs.
All of the 9018-9031 cars and some of the 270-303 cars have been renumbered into the 400-416 fleet when their PCB transformers were replaced
Some of the 101-188 and 309-399 cars were renumbered into the 417-460 series when there PCB transformers were replaced.
Car 9020 was destroyed in an Accident
| Year | Manufacturer | Model | Fleet |
| 1974-76 | General Electric | Silverliner IV Double End | #270-303, #400-416 |
| 1974-76 | General Electric | Silverliner IV Single End | 101-188, 304-399, 417-460 |

Push Pull # 2301 lead
Taken at Temple station
By Brandon Shaw
Push-Pull Notes
| Year | Manufacturer | Model | Fleet |
| 1970 | Pullman Standard | Comet I Cab | 2460-2461 |
| 1970 | Pullman Standard | Comet I Coaches | 2590-2595 |
| 1987 | ASEA | ASEA AEM-7 | 2301-2307 |
| 1996 | ABB | ALP-44 Locomotive | 2308 |
| 1987 | Bombardier | Comet II Cab Coaches | 2401-2410 |
| 1987 | Bombardier | Comet II Coaches | 2501-2525 |
| 2000 | Bombardier | Comet III "Shoreliner" Coaches | 2550-2559 |
#These cars were purchased from NJT in 2008.