| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | |
|---|---|---|---|---|---|---|
| Maximum permissible speed 30 m.p.h. | ||||||
| 1 |
 |
↕ | Hatfield No. 3 (E. Region) | - | ||
| Nast Hyde Halt (E. Region) | ||||||
| Smallford (E. Region) | ||||||
| Hill End | ||||||
| St. Albans London Road | ||||||
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 |
↕ | St. Albans Abbey Station | 6m 283yds | |||