Horizontal curvature for ELR BCB is based on the digitised notional centre-line, calculated in 100 metre sections. The average radius computation is weighted, however this should be treated as indicative only. The computed minimum and maximum radii are shown for completeness, and often report a much tighter radius than the physical railway. Radii calculations are influenced by the digitisation quality, and often produce inaccurate values at the extremities of the ELR, areas of tracks divergence, and locations of very tight curvature.
| Mileage | Schematic | Average Radius | Radius Range |
|---|---|---|---|
| 115M 1574y - 115M 1650y |  🔵-🔵🔵🔵-🔵 | Moderately Flat (2,809 m) | Moderately Flat (2,688 m to 2,928 m) |
| 115M 1650y - 116M 0000y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 116M 0000y - 116M 0110y |  🟢-🟢🟢🟢-⚫ | Very Flat (10,182 m) | Very Flat (6,116 m) to Extremely Flat (43,225 m) |
| 116M 0110y - 116M 0220y |  🟣-🟣🟣🟣-🟣 | Moderate (1,360 m) | Moderate (1,360 m) |
| 116M 0220y - 116M 0330y |  🟣-🔵🔵🔵-🔵 | Moderately Flat (2,170 m) | Moderate (1,875 m) to Moderately Flat (2,611 m) |
| 116M 0330y - 116M 0440y |  🟣-🟣🟣🟣-🔵 | Moderate (1,884 m) | Moderate (1,453 m) to Moderately Flat (2,914 m) |
| 116M 0440y - 116M 0550y |  🟡-🟣🟣🟣-🔵 | Moderate (1,908 m) | Moderate (1,247 m) to Moderately Flat (2,382 m) |
| 116M 0550y - 116M 0660y |  🟠-🟠🟠🟠-🟡 | Moderately Tight (737 m) | Moderately Tight (513 m) to Moderate (1,114 m) |
| 116M 0660y - 116M 0770y |  🟡-🟡🟡🟡-🟡 | Moderate (933 m) | Moderate (767 m to 1,152 m) |
| 116M 0770y - 116M 0880y |  🟡-🟡🟡🟡-🟣 | Moderate (1,110 m) | Moderate (819 m to 1,451 m) |
| 116M 0880y - 116M 0990y |  🟡-🟣🟣🟣-🔵 | Moderate (1,489 m) | Moderate (1,083 m) to Moderately Flat (2,897 m) |
| 116M 0990y - 116M 1003y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |