Horizontal curvature for ELR NTM3 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 |
|---|---|---|---|
| 66M 0431y - 66M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 66M 0440y - 66M 0550y | 🟢-🟢🟢🟢-⚪ | Very Flat (10,299 m) | Very Flat (5,773 m) to Straight |
| 66M 0550y - 66M 0660y | 🟣-🔵🔵🔵-⚪ | Flat (3,148 m) | Moderate (1,286 m) to Straight |
| 66M 0660y - 66M 0770y | 🔵-🔵🔵🔵-⚪ | Flat (4,846 m) | Moderately Flat (2,648 m) to Straight |
| 66M 0770y - 66M 0880y | 🔴-🟡🟡🟡-🟢 | Moderate (971 m) | Very Tight (347 m) to Very Flat (7,838 m) |
| 66M 0880y - 66M 0990y | 🟡-🟣🟣🟣-🔵 | Moderate (1,254 m) | Moderate (776 m) to Flat (4,958 m) |
| 66M 0990y - 66M 1100y | 🟠-🟠🟠🟠-⚪ | Moderately Tight (728 m) | Tight (355 m) to Straight |
| 66M 1100y - 66M 1210y | ⭕-🔵🔵🔵-⚪ | Moderately Flat (2,154 m) | Extremely Tight (152 m) to Straight |
| 66M 1210y - 66M 1320y | ⭕-🔴🔴🔴-⚪ | Very Tight (226 m) | Extremely Tight (<100 m) to Straight |
| 66M 1320y - 66M 1393y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |