Horizontal curvature for ELR BBS3 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 |
|---|---|---|---|
| 9M 0665y - 9M 0770y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (589 m) | Moderately Tight (511 m to 629 m) |
| 9M 0770y - 9M 0880y | 🟠-🟠🟠🟠-🔵 | Moderately Tight (724 m) | Moderately Tight (528 m) to Flat (3,268 m) |
| 9M 0880y - 9M 0990y | 🔴-🟠🟠🟠-🟠 | Tight (359 m) | Very Tight (274 m) to Moderately Tight (681 m) |
| 9M 0990y - 9M 1100y | 🟠-🟠🟠🟠-🟠 | Tight (436 m) | Tight (382 m) to Moderately Tight (551 m) |
| 9M 1100y - 9M 1210y | ⭕-🔴🔴🔴-🔵 | Very Tight (298 m) | Extremely Tight (130 m) to Moderately Flat (2,305 m) |
| 9M 1210y - 9M 1320y | ⭕-🟠🟠🟠-🔵 | Moderately Tight (576 m) | Extremely Tight (166 m) to Flat (3,998 m) |
| 9M 1320y - 9M 1430y | 🔴-🟠🟠🟠-🟠 | Tight (418 m) | Very Tight (258 m) to Moderately Tight (583 m) |
| 9M 1430y - 9M 1540y | 🔴-🟠🟠🟠-🟣 | Moderately Tight (530 m) | Very Tight (286 m) to Moderate (1,547 m) |
| 9M 1540y - 9M 1650y | ⭕-🟠🟠🟠-🟣 | Tight (355 m) | Extremely Tight (199 m) to Moderate (1,722 m) |
| 9M 1650y - 10M 0000y | 🟡-🟡🟡🟡-🟡 | Moderate (1,042 m) | Moderate (865 m to 1,226 m) |
| 10M 0000y - 10M 0110y | 🔴-🟡🟡🟡-🟢 | Moderate (792 m) | Very Tight (305 m) to Very Flat (5,082 m) |
| 10M 0110y - 10M 0220y | ⭕-🔴🔴🔴-⚪ | Very Tight (310 m) | Extremely Tight (<100 m) to Straight |
| 10M 0220y - 10M 0330y | 🔴-🟡🟡🟡-⚪ | Moderate (892 m) | Very Tight (228 m) to Straight |
| 10M 0330y - 10M 0440y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (559 m) | Extremely Tight (<100 m) to Straight |
| 10M 0440y - 10M 0550y | 🔴-🟡🟡🟡-🟢 | Moderate (821 m) | Very Tight (263 m) to Very Flat (6,004 m) |
| 10M 0550y - 10M 0627y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (590 m) | Extremely Tight (131 m) to Straight |