Horizontal curvature for ELR WJL4 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 |
|---|---|---|---|
| 191M 1574y - 191M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 191M 1650y - 192M 0000y | 🟣-🟣🟣🟣-🟣 | Moderate (1,940 m) | Moderate (1,940 m) |
| 192M 0000y - 192M 0110y | 🟣-🟣🟣🟣-🟣 | Moderate (1,385 m) | Moderate (1,253 m to 1,515 m) |
| 192M 0110y - 192M 0220y | 🔵-🟢🟢🟢-🟢 | Very Flat (6,474 m) | Flat (4,417 m) to Very Flat (9,136 m) |
| 192M 0220y - 192M 0330y | 🔴-🟠🟠🟠-⚪ | Moderately Tight (570 m) | Very Tight (268 m) to Straight |
| 192M 0330y - 192M 0440y | ⭕-🟠🟠🟠-🔵 | Tight (393 m) | Extremely Tight (224 m) to Moderately Flat (2,588 m) |
| 192M 0440y - 192M 0550y | 🔴-🟠🟠🟠-🟣 | Tight (389 m) | Very Tight (267 m) to Moderate (1,368 m) |
| 192M 0550y - 192M 0660y | 🟠-🟠🟠🟠-🟣 | Moderately Tight (722 m) | Moderately Tight (611 m) to Moderate (1,605 m) |
| 192M 0660y - 192M 0770y | 🟠-🟡🟡🟡-🟢 | Moderate (777 m) | Moderately Tight (638 m) to Very Flat (9,406 m) |
| 192M 0770y - 192M 0880y | 🟢-🟢🟢🟢-🟢 | Very Flat (5,321 m) | Very Flat (5,321 m) |
| 192M 0880y - 192M 0990y | 🔵-🟢🟢🟢-⚪ | Very Flat (7,310 m) | Flat (4,188 m) to Straight |
| 192M 0990y - 192M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 192M 1100y - 192M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 192M 1210y - 192M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 192M 1320y - 192M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 192M 1430y - 192M 1540y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,751 m) | Moderately Flat (2,751 m) |
| 192M 1540y - 192M 1650y | 🟣-🟣🟣🟣-🟣 | Moderate (1,591 m) | Moderate (1,591 m) |
| 192M 1650y - 193M 0000y | 🟣-🟣🟣🟣-🟣 | Moderate (1,644 m) | Moderate (1,558 m to 1,728 m) |
| 193M 0000y - 193M 0110y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,132 m) | Moderately Flat (2,132 m) |
| 193M 0110y - 193M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 193M 0220y - 193M 0330y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,554 m) | Moderately Flat (2,554 m) |
| 193M 0330y - 193M 0440y | 🔵-🟢🟢🟢-🟢 | Very Flat (5,303 m) | Flat (3,761 m) to Very Flat (7,851 m) |
| 193M 0440y - 193M 0550y | 🔵-🟢🟢🟢-🟢 | Very Flat (5,540 m) | Flat (3,456 m) to Very Flat (9,331 m) |
| 193M 0550y - 193M 0660y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,972 m) | Moderately Flat (2,711 m) to Flat (3,379 m) |
| 193M 0660y - 193M 0770y | 🔵-🟢🟢🟢-🟢 | Very Flat (5,147 m) | Moderately Flat (2,306 m) to Very Flat (18,572 m) |
| 193M 0770y - 193M 0880y | 🔴-🟠🟠🟠-🟠 | Tight (475 m) | Very Tight (325 m) to Moderately Tight (731 m) |
| 193M 0880y - 193M 0990y | 🟠-🟡🟡🟡-🔵 | Moderate (764 m) | Tight (456 m) to Moderately Flat (2,036 m) |
| 193M 0990y - 193M 1100y | 🟠-🟡🟡🟡-🟣 | Moderate (806 m) | Moderately Tight (500 m) to Moderate (1,411 m) |
| 193M 1100y - 193M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 193M 1210y - 193M 1232y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |