Horizontal curvature for ELR FHR4 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 |
|---|---|---|---|
| 2M 0213y - 2M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 0220y - 2M 0330y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (21,998 m) | Extremely Flat (21,998 m) |
| 2M 0330y - 2M 0440y | 🟢-🟢🟢🟢-🟢 | Very Flat (8,980 m) | Very Flat (8,980 m) |
| 2M 0440y - 2M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 0550y - 2M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 0660y - 2M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 0770y - 2M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 0880y - 2M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 0990y - 2M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 1100y - 2M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 1210y - 2M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 1320y - 2M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 1430y - 2M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 1540y - 2M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 2M 1650y - 3M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 3M 0000y - 3M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 3M 0110y - 3M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 3M 0220y - 3M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 3M 0330y - 3M 0440y | 🟡-🟡🟡🟡-🟡 | Moderate (1,153 m) | Moderate (1,153 m) |
| 3M 0440y - 3M 0550y | 🟣-🟣🟣🟣-🟣 | Moderate (1,552 m) | Moderate (1,552 m) |
| 3M 0550y - 3M 0660y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,399 m) | Moderately Flat (2,399 m) |
| 3M 0660y - 3M 0770y | 🟡-🟡🟡🟡-🟡 | Moderate (915 m) | Moderate (915 m) |
| 3M 0770y - 3M 0880y | 🟡-🟡🟡🟡-🟣 | Moderate (1,125 m) | Moderate (868 m to 1,428 m) |
| 3M 0880y - 3M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 3M 0990y - 3M 1100y | 🟣-🟣🟣🟣-🟣 | Moderate (1,626 m) | Moderate (1,626 m) |
| 3M 1100y - 3M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 3M 1210y - 3M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 3M 1320y - 3M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 3M 1430y - 3M 1540y | 🟣-🟣🟣🟣-🟣 | Moderate (1,579 m) | Moderate (1,579 m) |
| 3M 1540y - 3M 1650y | 🟣-🟣🟣🟣-🟣 | Moderate (1,829 m) | Moderate (1,829 m) |
| 3M 1650y - 4M 0000y | 🟣-🟣🟣🟣-🟣 | Moderate (1,529 m) | Moderate (1,529 m) |
| 4M 0000y - 4M 0110y | 🟣-🟣🟣🟣-🟣 | Moderate (1,302 m) | Moderate (1,302 m) |
| 4M 0110y - 4M 0220y | 🟡-🟡🟡🟡-🟡 | Moderate (1,051 m) | Moderate (1,051 m) |
| 4M 0220y - 4M 0330y | 🟣-🟣🟣🟣-🟣 | Moderate (1,996 m) | Moderate (1,996 m) |
| 4M 0330y - 4M 0440y | 🟣-🟣🟣🟣-🟣 | Moderate (1,308 m) | Moderate (1,308 m) |
| 4M 0440y - 4M 0550y | 🟡-🟡🟡🟡-🟡 | Moderate (1,240 m) | Moderate (1,240 m) |
| 4M 0550y - 4M 0660y | 🟡-🟡🟡🟡-🟣 | Moderate (1,209 m) | Moderate (1,141 m to 1,282 m) |
| 4M 0660y - 4M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 4M 0770y - 4M 0880y | 🟡-🟡🟡🟡-🟡 | Moderate (1,043 m) | Moderate (1,043 m) |
| 4M 0880y - 4M 0990y | 🟡-🟡🟡🟡-🟡 | Moderate (1,130 m) | Moderate (1,130 m) |
| 4M 0990y - 4M 1100y | 🔵-🔵🔵🔵-🔵 | Flat (4,458 m) | Flat (4,458 m) |
| 4M 1100y - 4M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 4M 1210y - 4M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 4M 1320y - 4M 1430y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (20,570 m) | Extremely Flat (20,570 m) |
| 4M 1430y - 4M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 4M 1540y - 4M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 4M 1650y - 5M 0000y | 🟢-🟢🟢🟢-🟢 | Very Flat (13,645 m) | Very Flat (13,645 m) |
| 5M 0000y - 5M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 5M 0110y - 5M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 5M 0220y - 5M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 5M 0330y - 5M 0440y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (642 m) | Moderately Tight (642 m) |
| 5M 0440y - 5M 0550y | 🟣-🟣🟣🟣-🟣 | Moderate (1,359 m) | Moderate (1,359 m) |
| 5M 0550y - 5M 0660y | 🟡-🟣🟣🟣-⚪ | Moderate (1,674 m) | Moderate (809 m) to Straight |
| 5M 0660y - 5M 0770y | 🔴-🟡🟡🟡-⚪ | Moderate (966 m) | Very Tight (277 m) to Straight |
| 5M 0770y - 5M 0880y | 🟠-🟠🟠🟠-⚪ | Moderately Tight (734 m) | Tight (489 m) to Straight |
| 5M 0880y - 5M 0990y | 🟣-🟣🟣🟣-🟣 | Moderate (1,424 m) | Moderate (1,424 m) |
| 5M 0990y - 5M 1100y | 🟠-🟡🟡🟡-🟡 | Moderate (765 m) | Moderately Tight (654 m) to Moderate (851 m) |
| 5M 1100y - 5M 1210y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (665 m) | Moderately Tight (665 m) |
| 5M 1210y - 5M 1320y | 🟠-🟡🟡🟡-🟡 | Moderate (790 m) | Moderately Tight (692 m) to Moderate (872 m) |
| 5M 1320y - 5M 1430y | 🟡-🟡🟡🟡-🟡 | Moderate (843 m) | Moderate (802 m to 892 m) |
| 5M 1430y - 5M 1540y | 🟡-🟡🟡🟡-🟡 | Moderate (895 m) | Moderate (895 m) |
| 5M 1540y - 5M 1650y | 🟠-🟡🟡🟡-🟡 | Moderate (752 m) | Moderately Tight (571 m) to Moderate (1,006 m) |
| 5M 1650y - 6M 0000y | 🟡-🟡🟡🟡-🟡 | Moderate (909 m) | Moderate (909 m) |
| 6M 0000y - 6M 0110y | 🟠-🟡🟡🟡-🟡 | Moderate (783 m) | Moderately Tight (705 m) to Moderate (849 m) |
| 6M 0110y - 6M 0220y | 🟡-🟡🟡🟡-🟡 | Moderate (751 m) | Moderate (751 m) |
| 6M 0220y - 6M 0330y | 🟣-🟣🟣🟣-🟣 | Moderate (1,945 m) | Moderate (1,945 m) |
| 6M 0330y - 6M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 6M 0440y - 6M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 6M 0550y - 6M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 6M 0660y - 6M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 6M 0770y - 6M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 6M 0880y - 6M 0990y | 🟢-🟢🟢🟢-🟢 | Very Flat (19,786 m) | Very Flat (19,786 m) |
| 6M 0990y - 6M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 6M 1100y - 6M 1210y | 🟣-🟣🟣🟣-🟣 | Moderate (1,479 m) | Moderate (1,479 m) |
| 6M 1210y - 6M 1320y | 🟡-🟡🟡🟡-🟡 | Moderate (1,073 m) | Moderate (1,073 m) |
| 6M 1320y - 6M 1430y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (746 m) | Moderately Tight (746 m) |
| 6M 1430y - 6M 1540y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (741 m) | Moderately Tight (741 m) |
| 6M 1540y - 6M 1650y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (685 m) | Moderately Tight (591 m) to Moderate (778 m) |
| 6M 1650y - 7M 0000y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (667 m) | Moderately Tight (587 m to 728 m) |
| 7M 0000y - 7M 0110y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (634 m) | Tight (493 m) to Moderate (808 m) |
| 7M 0110y - 7M 0220y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (600 m) | Tight (460 m) to Moderately Tight (718 m) |
| 7M 0220y - 7M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 0330y - 7M 0440y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,559 m) | Moderately Flat (2,192 m) to Flat (3,321 m) |
| 7M 0440y - 7M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 0550y - 7M 0660y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (22,525 m) | Extremely Flat (22,525 m) |
| 7M 0660y - 7M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 0770y - 7M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 0880y - 7M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 0990y - 7M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 1100y - 7M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 1210y - 7M 1320y | 🟢-🟢🟢🟢-🟢 | Very Flat (18,428 m) | Very Flat (18,428 m) |
| 7M 1320y - 7M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 1430y - 7M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 1540y - 7M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 7M 1650y - 8M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 0000y - 8M 0110y | 🔵-🔵🔵🔵-🔵 | Flat (4,244 m) | Flat (4,244 m) |
| 8M 0110y - 8M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 0220y - 8M 0330y | 🟡-🟡🟡🟡-🟡 | Moderate (804 m) | Moderate (804 m) |
| 8M 0330y - 8M 0440y | 🟡-🟡🟡🟡-🟡 | Moderate (900 m) | Moderate (900 m) |
| 8M 0440y - 8M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 0550y - 8M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 0660y - 8M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 0770y - 8M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 0880y - 8M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 0990y - 8M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 1100y - 8M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 1210y - 8M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 1320y - 8M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 1430y - 8M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 1540y - 8M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 8M 1650y - 9M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 9M 0000y - 9M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 9M 0110y - 9M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 9M 0220y - 9M 0330y | 🟣-🟣🟣🟣-🟣 | Moderate (1,374 m) | Moderate (1,374 m) |
| 9M 0330y - 9M 0440y | 🟡-🟡🟡🟡-🟡 | Moderate (890 m) | Moderate (890 m) |
| 9M 0440y - 9M 0550y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (599 m) | Moderately Tight (599 m) |
| 9M 0550y - 9M 0660y | 🟡-🟡🟡🟡-🟡 | Moderate (899 m) | Moderate (767 m to 1,067 m) |
| 9M 0660y - 9M 0770y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (614 m) | Moderately Tight (614 m) |
| 9M 0770y - 9M 0880y | 🟡-🟡🟡🟡-🟣 | Moderate (1,045 m) | Moderate (788 m to 1,484 m) |
| 9M 0880y - 9M 0990y | 🟣-🟣🟣🟣-🟣 | Moderate (1,469 m) | Moderate (1,469 m) |
| 9M 0990y - 9M 1100y | 🟣-🟣🟣🟣-🟣 | Moderate (1,419 m) | Moderate (1,419 m) |
| 9M 1100y - 9M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 9M 1210y - 9M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 9M 1320y - 9M 1430y | 🟡-🟢🟢🟢-⚪ | Very Flat (6,844 m) | Moderate (966 m) to Straight |
| 9M 1430y - 9M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 9M 1540y - 9M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 9M 1650y - 10M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 10M 0000y - 10M 0110y | 🟡-🟡🟡🟡-🟡 | Moderate (902 m) | Moderate (902 m) |
| 10M 0110y - 10M 0220y | 🟡-🟡🟡🟡-🟡 | Moderate (1,248 m) | Moderate (1,248 m) |
| 10M 0220y - 10M 0330y | ⭕-🟣🟣🟣-⚪ | Moderate (1,836 m) | Extremely Tight (145 m) to Straight |
| 10M 0330y - 10M 0440y | 🔴-🟣🟣🟣-⚪ | Moderate (1,444 m) | Very Tight (318 m) to Straight |
| 10M 0440y - 10M 0550y | 🟠-🟣🟣🟣-⚪ | Moderate (1,368 m) | Tight (416 m) to Straight |
| 10M 0550y - 10M 0660y | 🔴-🟡🟡🟡-⚪ | Moderate (1,114 m) | Very Tight (332 m) to Straight |
| 10M 0660y - 10M 0770y | 🟠-🟣🟣🟣-⚪ | Moderate (1,860 m) | Tight (435 m) to Straight |
| 10M 0770y - 10M 0880y | 🟡-🟡🟡🟡-🔵 | Moderate (1,230 m) | Moderate (882 m) to Moderately Flat (2,224 m) |
| 10M 0880y - 10M 0990y | 🔵-🔵🔵🔵-⚪ | Flat (4,859 m) | Moderately Flat (2,761 m) to Straight |
| 10M 0990y - 10M 1100y | ⭕-🟡🟡🟡-⚪ | Moderate (993 m) | Extremely Tight (<100 m) to Straight |
| 10M 1100y - 10M 1198y | 🟠-🟠🟠🟠-🟣 | Moderately Tight (642 m) | Tight (434 m) to Moderate (1,388 m) |