RDG RS3:
This page is dedicated to RDG's fleet of ALCO RS3 roadswitchers. The RDG was the original owner of 67 RS3 units.
Original orders:
| Orig. road numbers | model | ALCO serial no. | build date | notes |
| RDG 444-450 | RS3 | 80552-80558 | 10/1953 |
| RDG 460-472 | RS3 | 79866-79878 | 5/1952 | |
| RDG 473-475 | RS3 | 79863-79865 | 5/1952 |
| RDG 481-483 | RS3 | 80532-80534 | 8/1953 | |
| RDG 484-485 | RS3 | 79943-79944 | 6/1952 | |
| RDG 486-495 | RS3 | 80104-80113 | 6-7/1952 | |
| RDG 496-499 | RS3 | 79859-79862 | 4/1952 | |
| RDG 500-509 | RS3 | 78563-78572 | 4/1951 | |
| RDG 510 | RS3 | 78918 | 7/1951 | |
| RDG 511-513 | RS3 | 78920-78922 | 7/1951 | |
| RDG 514-515 | RS3 | 78924-78925 | 7/1951 | |
| RDG 516-517 | RS3 | 78928-78929 | 8/1951 | |
| RDG 518-520 | RS3 | 78931-78933 | 8/1951 | |
| RDG 521-523 | RS3 | 78935-78937 | 8/1951 | |
| RDG 524 | RS3 | 78939 | 8/1951 |
RS3: RDG 444 80552 10/1953 RDG 445 80553 10/1953 RDG 446 80554 10/1953 RDG 447 80555 10/1953 RDG 448 80556 10/1953 RDG 449 80557 10/1953 RDG 450 80558 10/1953 RDG 460 79866 5/1952 RDG 461 79867 5/1952 RDG 462 79868 5/1952 RDG 463 79869 5/1952 RDG 464 79870 5/1952 RDG 465 79871 5/1952 RDG 466 79872 5/1952 RDG 467 79873 5/1952 RDG 468 79874 5/1952 RDG 469 79875 5/1952 RDG 470 79876 5/1952 RDG 471 79877 5/1952 RDG 472 79878 5/1952 RDG 473 79863 5/1952 RDG 474 79864 5/1952 RDG 475 79865 5/1952 RDG 481 80532 8/1953 RDG 482 80533 8/1953 RDG 483 80534 8/1953 RDG 484 79943 6/1952 RDG 485 79944 6/1952 RDG 486 80104 6-7/1952 RDG 487 80105 6-7/1952 RDG 488 80106 6-7/1952 RDG 489 80107 6-7/1952 RDG 490 80108 6-7/1952 RDG 491 80109 6-7/1952 RDG 492 80110 6-7/1952 RDG 493 80111 6-7/1952 RDG 494 80112 6-7/1952 RDG 495 80113 6-7/1952 RDG 496 79859 4/1952 RDG 497 79860 4/1952 RDG 498 79861 4/1952 RDG 499 79862 4/1952 RDG 500 78563 4/1951 RDG 501 78564 4/1951 RDG 502 78565 4/1951 RDG 503 78566 4/1951 RDG 504 78567 4/1951 RDG 505 78568 4/1951 RDG 506 78569 4/1951 RDG 507 78570 4/1951 RDG 508 78571 4/1951 RDG 509 78572 4/1951 RDG 510 78918 7/1951 RDG 511 78920 7/1951 RDG 512 78921 7/1951 RDG 513 78922 7/1951 RDG 514 78924 7/1951 RDG 515 78925 7/1951 RDG 516 78928 8/1951 RDG 517 78929 8/1951 RDG 518 78931 8/1951 RDG 519 78932 8/1951 RDG 520 78933 8/1951 RDG 521 78935 8/1951 RDG 522 78936 8/1951 RDG 523 78937 8/1951 RDG 524 78939 8/1951