Horizontal curvature for ELR AFS 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 |
|---|---|---|---|
| 83M 0308y - 83M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 83M 0330y - 83M 0440y | 🔴-🟡🟡🟡-⚪ | Moderate (909 m) | Very Tight (319 m) to Straight |
| 83M 0440y - 83M 0550y | 🔴-🟠🟠🟠-🟣 | Moderately Tight (581 m) | Very Tight (269 m) to Moderate (1,332 m) |
| 83M 0550y - 83M 0660y | 🟣-🟣🟣🟣-🟣 | Moderate (1,335 m) | Moderate (1,335 m) |
| 83M 0660y - 83M 0770y | 🟣-🟣🟣🟣-🔵 | Moderate (1,880 m) | Moderate (1,292 m) to Flat (4,290 m) |
| 83M 0770y - 83M 0880y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (506 m) | Moderately Tight (506 m) |
| 83M 0880y - 83M 0990y | 🟠-🟠🟠🟠-🟠 | Tight (462 m) | Tight (375 m) to Moderately Tight (719 m) |
| 83M 0990y - 83M 1100y | ⭕-🟠🟠🟠-🟣 | Tight (390 m) | Extremely Tight (220 m) to Moderate (1,658 m) |
| 83M 1100y - 83M 1210y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (692 m) | Tight (472 m) to Moderate (920 m) |
| 83M 1210y - 83M 1320y | 🟡-🔵🔵🔵-⚪ | Moderately Flat (2,360 m) | Moderate (829 m) to Straight |
| 83M 1320y - 83M 1430y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,746 m) | Moderately Flat (2,746 m) |
| 83M 1430y - 83M 1540y | 🟡-🟡🟡🟡-🟡 | Moderate (969 m) | Moderate (969 m) |
| 83M 1540y - 83M 1650y | 🟣-🟣🟣🟣-🟣 | Moderate (1,713 m) | Moderate (1,713 m) |
| 83M 1650y - 83M 1683y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |