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 Silverliner II & IIIs, however, are the secondary trains being used in the fleet being mainly used during the rush hour. These trains are being replaced by new Silverliner V cars, and will be off the rails by June of 2012.
The push pull fleet is used on both Limited and express runs on the R3, R5, and the R7 to be used to their full efficiency; These trains usually consists of 5-8 Comet I/II/III cars. The Comet I fleet were recently obtained from NJT and operates Media/Elwyn Line in the morning and the Pennypack Limited on the West Trenton Line in the 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 .
#701, 703-705 double ended and 801-806 sngle ended cars has arrived on SEPTA property. For the next several months, these three pilot cars will undergo testing.
| 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 |

Budd Silverliner III
Ardmore, PA
Taken By Brandon S
All Silverliner III cars are Ex Pennsylvania RR
The engineer's operating position on these cars are located on the left hand side as opposed to the right hand side in order to speed up boarding when single cars were used on the Harrisburg service.
All Silverliner IIIs will be replaced by Silverliner V cars. As of May 4th, 2012, #235 is the only Silverliner III in service. This car was used on the "Farewell to the Silverliners" Charter on Sunday, May 6th, 2012.
| Year | Manufacturer | Model | Fleet |
| 1967 | St Louis Car | Silverliner III double-end | 220-239 |

Budd Silverliner II
Temple Station
Taken By Brandon S.
Notes
► Cars 201-219 (MP85BE1-TC) and 251-269 (MP85CE1-TC) are Ex Pennsylvania RR
► Cars 9001-9017 (REB13 (MA1B)) are Ex-Reading RR.
► Car #214 has been retired
► Car 210 and 257 were destroyed by fire, and car 265 was destroyed in an Accident.
► There are a total of 51 Silverliner II cars in Service.
All Silverliner II cars will be replaced by Silverliner V cars.
ROSTER & INFORMATION (as of 5/4/2012)
| Year | Manufacturer | Model | Fleet |
| 1962-63 | Budd | Silverliner II double-end | 216, 219, 255-256, 266, 9001, 9006-9007, 9009-9010, 9012-9013 |

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 units were purchased from NJT in 2008.