Horizontal curvature for ELR SHF 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 |
|---|---|---|---|
| 12M 0587y - 12M 0660y |  🟠-🟠🟠🟠-⚪ | Moderately Tight (632 m) | Tight (465 m) to Straight |
| 12M 0660y - 12M 0770y |  â•-🟠🟠🟠-⚪ | Tight (353 m) | Extremely Tight (202 m) to Straight |
| 12M 0770y - 12M 0880y |  â•-🔴🔴🔴-⚪ | Very Tight (330 m) | Extremely Tight (<100 m) to Straight |
| 12M 0880y - 12M 0990y |  â•-🟠🟠🟠-⚪ | Tight (406 m) | Extremely Tight (<100 m) to Straight |
| 12M 0990y - 12M 1100y |  â•-🟠🟠🟠-⚪ | Tight (427 m) | Extremely Tight (<100 m) to Straight |
| 12M 1100y - 12M 1210y |  🟡-🔵🔵🔵-⚪ | Flat (3,287 m) | Moderate (1,228 m) to Straight |
| 12M 1210y - 12M 1244y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |