| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| ↕ | Clydach-on-Tawe South Station | - | |||||
| 1 | ↕ | ↓ | Morriston East No. 2 | 1m 1408yds | DRS 40 | ||
| 2 | ↑ | ↓ | Morriston East No. 1 | 0m 418yds | |||
| 3 | ↑ | - | Upper Bank Junction | 1m 880yds | |||