Horizontal curvature for ELR GRS1 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 |
|---|---|---|---|
| 109M 1212y - 109M 1320y | ⭕-🟠🟠🟠-🟠 | Tight (350 m) | Extremely Tight (198 m) to Moderately Tight (584 m) |
| 109M 1320y - 109M 1430y | 🔴-🔴🔴🔴-🔴 | Very Tight (306 m) | Very Tight (288 m to 330 m) |
| 109M 1430y - 109M 1540y | ⭕-🔴🔴🔴-🟠 | Very Tight (245 m) | Extremely Tight (131 m) to Tight (394 m) |
| 109M 1540y - 109M 1650y | 🔴-🔴🔴🔴-🟠 | Very Tight (338 m) | Very Tight (323 m) to Tight (364 m) |
| 109M 1650y - 110M 0000y | ⭕-🔴🔴🔴-🟠 | Very Tight (272 m) | Extremely Tight (219 m) to Tight (370 m) |
| 110M 0000y - 110M 0110y | 🟠-🟠🟠🟠-🟠 | Tight (472 m) | Tight (472 m) |
| 110M 0110y - 110M 0220y | 🟢-🟢🟢🟢-🟢 | Very Flat (19,620 m) | Very Flat (19,620 m) |
| 110M 0220y - 110M 0330y | 🟣-🔵🔵🔵-⚫ | Flat (3,519 m) | Moderate (1,630 m) to Extremely Flat (41,044 m) |
| 110M 0330y - 110M 0440y | 🔵-🟢🟢🟢-⚪ | Very Flat (8,094 m) | Flat (3,808 m) to Straight |
| 110M 0440y - 110M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 110M 0550y - 110M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 110M 0660y - 110M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 110M 0770y - 110M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 110M 0880y - 110M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 110M 0990y - 110M 1100y | 🟡-🟡🟡🟡-🟡 | Moderate (915 m) | Moderate (915 m) |
| 110M 1100y - 110M 1210y | 🟡-🟡🟡🟡-🟡 | Moderate (1,101 m) | Moderate (1,101 m) |
| 110M 1210y - 110M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 110M 1320y - 110M 1430y | 🟡-🟡🟡🟡-🟡 | Moderate (1,188 m) | Moderate (1,188 m) |
| 110M 1430y - 110M 1540y | 🟡-🟡🟡🟡-🟡 | Moderate (973 m) | Moderate (973 m) |
| 110M 1540y - 110M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 110M 1650y - 111M 0000y | 🟡-🟡🟡🟡-🟡 | Moderate (1,183 m) | Moderate (1,183 m) |
| 111M 0000y - 111M 0110y | 🟡-🟡🟡🟡-🟡 | Moderate (1,042 m) | Moderate (1,042 m) |
| 111M 0110y - 111M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 0220y - 111M 0330y | 🟡-🟡🟡🟡-🟡 | Moderate (1,225 m) | Moderate (1,216 m to 1,234 m) |
| 111M 0330y - 111M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 0440y - 111M 0550y | 🟣-🟣🟣🟣-🟣 | Moderate (1,350 m) | Moderate (1,266 m to 1,462 m) |
| 111M 0550y - 111M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 0660y - 111M 0770y | 🟣-🟣🟣🟣-🟣 | Moderate (1,709 m) | Moderate (1,709 m) |
| 111M 0770y - 111M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 0880y - 111M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 0990y - 111M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 1100y - 111M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 1210y - 111M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 1320y - 111M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 1430y - 111M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 111M 1540y - 111M 1650y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (25,948 m) | Extremely Flat (25,948 m) |
| 111M 1650y - 112M 0000y | 🟢-🟢🟢🟢-🟢 | Very Flat (5,206 m) | Very Flat (5,206 m) |
| 112M 0000y - 112M 0008y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (39,533 m) | Extremely Flat (36,378 m to 41,850 m) |