Horizontal curvature for ELR HAR 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 |
|---|---|---|---|
| 95M 0476y - 95M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 95M 0550y - 95M 0660y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (21,270 m) | Extremely Flat (21,270 m) |
| 95M 0660y - 95M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 95M 0770y - 95M 0880y | 🟡-🟡🟡🟡-🟣 | Moderate (1,243 m) | Moderate (1,119 m to 1,338 m) |
| 95M 0880y - 95M 0990y | 🟢-🟢🟢🟢-🟢 | Very Flat (10,270 m) | Very Flat (10,270 m) |
| 95M 0990y - 95M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 95M 1100y - 95M 1210y | 🔵-🟢🟢🟢-🟢 | Very Flat (5,174 m) | Moderately Flat (2,805 m) to Very Flat (13,162 m) |
| 95M 1210y - 95M 1320y | 🔵-🔵🔵🔵-⚪ | Flat (4,127 m) | Moderately Flat (2,526 m) to Straight |
| 95M 1320y - 95M 1430y | 🟠-🟠🟠🟠-🟠 | Tight (452 m) | Tight (380 m) to Moderately Tight (588 m) |
| 95M 1430y - 95M 1540y | 🔴-🔴🔴🔴-🟠 | Very Tight (345 m) | Very Tight (236 m) to Moderately Tight (624 m) |
| 95M 1540y - 95M 1650y | ⭕-🔴🔴🔴-🟠 | Very Tight (322 m) | Extremely Tight (214 m) to Tight (428 m) |
| 95M 1650y - 96M 0000y | ⭕-🟣🟣🟣-⚪ | Moderate (1,454 m) | Extremely Tight (208 m) to Straight |
| 96M 0000y - 96M 0037y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |