| Answer | Crossword Clue |
|---|---|
| ACELA | D.C.-to-Boston transport |
| ACELA | Boston-to-D.C. speedster |
| ACELA | It travels from D.C. to Boston in about seven hours |
| METRO | D.C. transport |
| ACELA | Boston-D.C. service |
| ACELA | Boston-D.C. express train |
| ORANGELINE | Part of the subway system in Chicago, Boston or D.C. |
