Horizontal curvature for ELR HTM 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 |
|---|---|---|---|
| 67M 1445y - 67M 1540y |  🟣-🟣🟣🟣-🟣 | Moderate (1,412 m) | Moderate (1,412 m) |
| 67M 1540y - 67M 1650y |  🟡-🟣🟣🟣-🔵 | Moderate (1,275 m) | Moderate (829 m) to Moderately Flat (2,588 m) |
| 67M 1650y - 68M 0000y |  🟡-🟣🟣🟣-🟢 | Moderate (1,688 m) | Moderate (1,016 m) to Very Flat (16,058 m) |
| 68M 0000y - 68M 0110y |  🟡-🔵🔵🔵-🟢 | Moderately Flat (2,089 m) | Moderate (1,088 m) to Very Flat (14,359 m) |
| 68M 0110y - 68M 0220y |  🔵-🔵🔵🔵-🔵 | Moderately Flat (2,486 m) | Moderately Flat (2,486 m) |
| 68M 0220y - 68M 0330y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 68M 0330y - 68M 0440y |  🟠-🟠🟠🟠-🟠 | Moderately Tight (640 m) | Moderately Tight (640 m) |
| 68M 0440y - 68M 0550y |  🟡-🟡🟡🟡-🟡 | Moderate (1,168 m) | Moderate (1,168 m) |
| 68M 0550y - 68M 0660y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 68M 0660y - 68M 0770y |  🟣-🟣🟣🟣-🟣 | Moderate (1,306 m) | Moderate (1,306 m) |
| 68M 0770y - 68M 0880y |  🟣-🟣🟣🟣-🟣 | Moderate (1,463 m) | Moderate (1,463 m) |
| 68M 0880y - 68M 0990y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 68M 0990y - 68M 1100y |  🔵-🔵🔵🔵-🔵 | Flat (3,901 m) | Flat (3,901 m) |
| 68M 1100y - 68M 1210y |  🔵-🔵🔵🔵-🔵 | Flat (3,188 m) | Flat (3,188 m) |
| 68M 1210y - 68M 1320y |  🟡-🟡🟡🟡-🟡 | Moderate (991 m) | Moderate (991 m) |
| 68M 1320y - 68M 1430y |  🟢-🟢🟢🟢-⚪ | Very Flat (10,396 m) | Very Flat (7,332 m) to Straight |
| 68M 1430y - 68M 1540y |  🟠-🟠🟠🟠-🟠 | Tight (429 m) | Tight (378 m to 495 m) |
| 68M 1540y - 68M 1650y |  🟠-🟠🟠🟠-🟡 | Moderately Tight (708 m) | Moderately Tight (625 m) to Moderate (898 m) |
| 68M 1650y - 69M 0000y |  🔴-🟠🟠🟠-🟠 | Tight (375 m) | Very Tight (322 m) to Tight (447 m) |
| 69M 0000y - 69M 0110y |  🔴-🟠🟠🟠-🟣 | Moderately Tight (616 m) | Very Tight (342 m) to Moderate (1,459 m) |
| 69M 0110y - 69M 0220y |  🟠-🟠🟠🟠-🟠 | Tight (450 m) | Tight (419 m) to Moderately Tight (511 m) |
| 69M 0220y - 69M 0330y |  🔴-🟠🟠🟠-🟡 | Tight (395 m) | Very Tight (233 m) to Moderate (801 m) |
| 69M 0330y - 69M 0440y |  🟣-🟣🟣🟣-🟣 | Moderate (1,466 m) | Moderate (1,466 m) |
| 69M 0440y - 69M 0550y |  🟢-🟢🟢🟢-🟢 | Very Flat (16,088 m) | Very Flat (16,088 m) |
| 69M 0550y - 69M 0660y |  🟢-🟢🟢🟢-🟢 | Very Flat (15,819 m) | Very Flat (15,819 m) |
| 69M 0660y - 69M 0770y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 69M 0770y - 69M 0880y |  🔵-🟢🟢🟢-🟢 | Very Flat (6,350 m) | Flat (4,782 m) to Very Flat (9,626 m) |
| 69M 0880y - 69M 0990y |  🟢-🟢🟢🟢-🟢 | Very Flat (5,461 m) | Very Flat (5,461 m) |
| 69M 0990y - 69M 1100y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 69M 1100y - 69M 1210y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 69M 1210y - 69M 1236y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |