| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| 1 | – | ↓↓ | Cardiff West | – | |||
| 2 | ↑↑ | ↓↓ | Penarth Curve East | – | |||
| 3 | ↑↑ | ↓↓ | Penarth Curve South | 0m 489yds | |||
| 4 | ↑↑ | ↓↓ | Grangetown | 0m 572yds | |||
| 5 | ↑↑ | ↓↓ | Llandough | 0m 1628yds | |||
| 6 | ↑↑ | ↓↓ | Cogan Junction | 0m 1017yds | |||
| Cogan | |||||||
| 7 | ↑↑ | ↓ | Cogan Siding | 0m 258yds | |||
| Dinas Powis | |||||||
| 8 | ↑ | ↓↓ | Cadoxton South | 3m 880yds | |||
| Cadoxton | |||||||
| 9 | ↑↑ | ↓ | Cadoxton Low Level Junction | 0m 484yds | |||
| 10 | ↑ | ↓ | Barry Docks | 0m 1243yds | |||
| 11 | ↑ | ↓↓↓ | Barry Town | 1m 61yds | |||
| 12 | ↑↑ | ↓ | Barry Junction | 0m 269yds | |||
| 13 | ↑ | ↓↓ | Barry Island West | 0m 979yds | |||
| Barry Island | |||||||
| 14 | ↑ | ↕ | Barry Island East | 0m 231yds | |||
| ↕ | Barry Pier | 0m 616yds | |||||