| 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 |
 |
↕ | Cheddington Station | – | ||
| 2 | ↕ | Marston Gate (L.C.) | 2m 1210yds | |||
| 3 | — | ↕ | Aylesbury High Street Station (L.C.) | 4m 225yds | ||