Please note that once you have printed any of these documents it is an uncontrolled copy and valid only for the day on which it was printed. Please return to this website to verify content.
| Number | Title | Effective | Version |
|---|---|---|---|
| NSFS 550 | Systems of Safeworking | 11 May 2026 | 1.0 |
| NSFS 552 | Train Separation Requirements | 11 May 2026 | 1.0 |
| NSFS 554 | Track Occupancy Requirements | 11 May 2026 | 1.0 |
| NSFS 556 | Authorities | 11 May 2026 | 1.0 |
| NSFS 558 | Route Integrity Requirements | 11 May 2026 | 1.0 |
| NSFS 560 | Train Working Advice | 11 May 2026 | 1.0 |
| NSFS 562 | Train Authority Protocols | 11 May 2026 | 1.0 |
| NSFS 564 | CTC or ABS Failures | 11 May 2026 | 1.0 |
| NSFS 566 | Single Line Working over Double or Multiple Lines | 11 May 2026 | 1.0 |
| NSFS 568 | Trains Working or Stabling at intermediate sidings in a section governed by TOW | 11 May 2026 | 1.0 |
| ATMS | Electronic Authority – Advanced Train Management System (ATMS) | 16 Apr 2023 | 1.1 |