| Service to commuters along the Shore Line East is provided by the Connecticut Department of Transportation, teamed up with New York's Metro-North Commuter Railroad. ConnDOT's diesels are painted in the colors of the old New York, New Haven & Hartford. |
| Left | Right | Description | Date Drawn | ||
| F7A | 4/1/01 | ||||
| FL9 | 4/1/01 | ||||
| GP40P | 4/7/01 | ||||
| P32AC-DM | 10/17/01 | ||||
| SPV2000 Constitution Liner | - | ||||
| Comet II Coach | 4/7/01 |