| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| 1 | - | ↓↓ | Marshfield | 1m 1320yds | DRS 70 | ||
| 2 | ↑↑ | ↓↓ | St. Mellons West | 2m 1012yds | |||
| 3 | ↑↑ | ↓↓↓↓ | Rumney River Bridge Junction | 1m 770yds | |||
| 4 | ↑↑↑↑ | ↓↓↓ | Pengam Junction | 0m 924yds | |||
| 5 | ↑↑ | ↓↓ | Roath | 0m 1342yds | |||
| 6 | ↑↑ | ↓↓↓ | Long Dyke Junction | 0m 374yds | |||
| 7 | ↑↑ | ↓↓↓ | Newtown East | 0m 418yds | |||
| 8 | ↑↑ | ↓↓ | Newtown West | 0m 374yds | |||
| 9 | ↑↑ | ↓↓↓↓ | Cardiff East | 0m 687yds | |||
| Cardiff General | |||||||
| 10 | ↑↑↑↑↑ | ↓↓ | Cardiff West | 0m 627yds | |||
| 11 | ↑↑↑ | ↓ | Canton Sdgs. | 0m 676yds | |||
| 12 | ↑↑↑ | ↓ | Leckwith Junction | 0m 1133yds | |||
| 13 | ↑ | ↓ | Ely (Main Line) | 1m 225yds | URS 70 | ||
| 14 | ↑ | ↓ | St. Fagans | 1m 1188yds | DGL 65 | ||
| 15 | ↑ | ↓↓ | Peterston East | 1m 1716yds | |||
| 16 | ↑↑ | ↓ | Peterston West | 0m 880yds | |||
| 17 | ↑ | ↓↓ | Pontsarn Crossing | 1m 1506yds | |||
| 18 | ↑↑ | ↓ | Miskin Crossing | 1m 407yds | |||
| 19 | ↑ | ↓↓ | Llantrisant East | 1m 1474yds | |||
| 20 | ↑↑ | ↓ | Llantrisant West | 0m 671yds | URS 43 | ||
| 21 | ↑ | ↓↓ | Llanharan East | 1m 1094yds | |||
| 22 | ↑↑ | ↓ | Llanharan West | 0m 440yds | |||
| Llanharan | |||||||
| 23 | ↑ | ↓ | Llanharan Colliery | 0m 858yds | DGL 54 | ||
| 24 | ↑ | ↓ | Brynygwynon | 0m 1419yds | |||
| 25 | ↑ | ↓↓ | Pencoed East | 0m 1034yds | |||
| Pencoed | |||||||
| 26 | ↑↑ | ↓ | Pencoed West | 0m 1474yds | |||
| 27 | ↑ | ↓↓ | Tremains East | 1m 599yds | |||
| Tremains | |||||||
| 28 | ↑↑ | ↓ | Tremains West | 0m 1595yds | DPL 30 UPL 50 |
||
| 29 | ↑ | ↓ | Bridgend East | 0m 1166yds | |||
| Bridgend | |||||||
| 30 | ↑↑ | ↓↓ | Bridgend Middle | 0m 434yds | |||
| 31 | ↑ | ↓ | Bridgend West | 0m 473yds | UGL 60 | ||
| 32 | ↑ | ↓ | Stormy Sidings | 3m 1188yds | DGL 73 UGL 67 |
||
| 33 | ↑ | ↓ | Pyle East | 1m 451yds | |||
| ↑ | - | Pyle | |||||