| Clue | Source | Date |
|---|---|---|
| Rail track measurement (6,5) | Puzzler | 18 Apr 2026 |
| Railway measurement (6,5) | ||
| Smaller than usual railway measurement (6,5) | ||
| On track to be smaller (6,5) | ||
| Railway track less wide than the standard 56.5 inches | The Guardian Quick | 10 Mar 2022 |
| Kind of railroad | ||
| Provincial; petty |