| 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 | – | ||
| Lemsford Road Halt | ||||||
| Nast Hyde Halt | o. 01.02.1910 c. 01.10 1951 | |||||
| Smallford | c. 00.05.1866 c. 01.01.1969 | |||||
| Hill End (L.M.R.) | ||||||
| St. Albans (London Road) (L.M.R.) | ||||||
| 2 | — | ↕ | St. Albans Abbey (L.M.R.) Station | 6m 283yds | ||