Horizontal curvature for ELR GSM5 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 |
|---|---|---|---|
| 106M 1704y - 107M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 107M 0000y - 107M 0110y | 🟢-🟢🟢🟢-🟢 | Very Flat (17,283 m) | Very Flat (17,283 m) |
| 107M 0110y - 107M 0220y | 🔵-🔵🔵🔵-🔵 | Flat (4,254 m) | Flat (4,254 m) |
| 107M 0220y - 107M 0330y | 🟣-🟣🟣🟣-🟣 | Moderate (1,553 m) | Moderate (1,553 m) |
| 107M 0330y - 107M 0440y | ⭕-🔴🔴🔴-🔵 | Very Tight (343 m) | Extremely Tight (155 m) to Moderately Flat (2,408 m) |
| 107M 0440y - 107M 0550y | ⭕-⭕⭕⭕-🔴 | Extremely Tight (177 m) | Extremely Tight (108 m) to Very Tight (274 m) |
| 107M 0550y - 107M 0660y | ⭕-⭕⭕⭕-⭕ | Extremely Tight (203 m) | Extremely Tight (191 m to 214 m) |
| 107M 0660y - 107M 0770y | ⭕-⭕⭕⭕-🔴 | Extremely Tight (198 m) | Extremely Tight (152 m) to Very Tight (239 m) |
| 107M 0770y - 107M 0880y | ⭕-🟠🟠🟠-⚫ | Moderately Tight (541 m) | Extremely Tight (108 m) to Extremely Flat (26,324 m) |
| 107M 0880y - 107M 0990y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (37,799 m) | Extremely Flat (37,799 m) |
| 107M 0990y - 107M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 107M 1100y - 107M 1210y | 🔵-🔵🔵🔵-🔵 | Flat (4,056 m) | Flat (4,056 m) |
| 107M 1210y - 107M 1320y | 🟡-🟡🟡🟡-🟡 | Moderate (844 m) | Moderate (844 m) |
| 107M 1320y - 107M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 107M 1430y - 107M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 107M 1540y - 107M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 107M 1650y - 108M 0000y | 🔵-🔵🔵🔵-🔵 | Flat (4,107 m) | Flat (4,107 m) |
| 108M 0000y - 108M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 108M 0110y - 108M 0220y | 🔴-🔴🔴🔴-🔴 | Very Tight (268 m) | Very Tight (268 m) |
| 108M 0220y - 108M 0330y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (674 m) | Moderately Tight (674 m) |
| 108M 0330y - 108M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 108M 0440y - 108M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 108M 0550y - 108M 0660y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,440 m) | Moderately Flat (2,440 m) |
| 108M 0660y - 108M 0737y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |