| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| Maximum permissible speed 35 m.p.h. | |||||||
| 1 |
 |
– | ↓ | Watford High Street Station | – | ||
| 2 |
 |
↑ | ↕ | Croxley Green Junction | 0m 863yds | ||
| Watford West Station | |||||||
| — | ↕ | Croxley Green Station | 1m 748yds | ||||