Horizontal curvature for ELR SEL 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 |
|---|---|---|---|
| 161M 0448y - 161M 0550y |  🟢-🟢🟢🟢-⚪ | Very Flat (6,279 m) | Very Flat (5,642 m) to Straight |
| 161M 0550y - 161M 0660y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 161M 0660y - 161M 0770y |  🔴-🟠🟠🟠-🟠 | Tight (391 m) | Very Tight (323 m) to Tight (494 m) |
| 161M 0770y - 161M 0880y | Â â•-â•â•â•-â•Â | Extremely Tight (190 m) | Extremely Tight (126 m to 215 m) |
| 161M 0880y - 161M 0990y |  â•-â•â•â•-🔴 | Extremely Tight (176 m) | Extremely Tight (109 m) to Very Tight (229 m) |
| 161M 0990y - 161M 1100y |  🔴-🟠🟠🟠-🟠 | Tight (391 m) | Very Tight (313 m) to Moderately Tight (519 m) |
| 161M 1100y - 161M 1210y |  🔴-🔴🔴🔴-🔴 | Very Tight (321 m) | Very Tight (305 m to 344 m) |
| 161M 1210y - 161M 1320y |  🔴-🟠🟠🟠-🟡 | Tight (426 m) | Very Tight (229 m) to Moderate (1,101 m) |
| 161M 1320y - 161M 1387y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |