Signal aspects
- 405 — Clear
- 406 — Clear to Limited
- 407 — Clear to Medium
- 408 — Clear to Diverging
- 409 — Clear to Slow
- 410 — Clear to Restricting
- 411 — Clear to Stop
- 412 — Advance Clear to Limited
- 413 — Advance Clear to Medium
- 414 — Advance Clear to Slow
- 414A — Advance Clear to Diverging
- 415 — Advance Clear to Stop
- 416 — Limited to Clear
- 417 — Limited to Limited
- 418 — Limited to Medium
- 419 — Limited to Slow
- 419A — Limited To Diverging
- 420 — Limited to Restricting
- 421 — Limited to Stop
- 422 — Medium to Clear
- 423 — Medium to Limited
- 424 — Medium to Medium
- 425 — Medium to Slow
- 425A — Medium to Diverging
- 426 — Medium to Restricting
- 427 — Medium to Stop
- 428 — Diverging to Clear
- 429 — Diverging to stop
- 430 — Diverging
- 431 — Slow to Clear
- 432 — Slow to Limited
- 432A — Diverging to Limited
- 433 — Slow to Medium
- 433A — Diverging to Medium
- 434 — Slow to Slow
- 434A — Diverging to Diverging
- 435 — Slow to Stop
- 436 — Restricting
- 437 — Stop and Proceed
- 438 — Take or Leave Siding or Other Track.
- 439 — Stop