Horizontal curvature for ELR RGY1 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 |
|---|---|---|---|
| 81M 1680y - 82M 0000y |  🟣-🟣🟣🟣-🟣 | Moderate (1,330 m) | Moderate (1,330 m) |
| 82M 0000y - 82M 0110y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 82M 0110y - 82M 0220y |  🟠-🟠🟠🟠-🟠 | Moderately Tight (585 m) | Moderately Tight (585 m) |
| 82M 0220y - 82M 0330y |  â•-🔴🔴🔴-🟠 | Very Tight (350 m) | Extremely Tight (209 m) to Moderately Tight (569 m) |
| 82M 0330y - 82M 0440y |  â•-â•â•â•-🟠 | Extremely Tight (189 m) | Extremely Tight (122 m) to Tight (408 m) |
| 82M 0440y - 82M 0550y |  â•-🔴🔴🔴-🟠 | Very Tight (280 m) | Extremely Tight (152 m) to Moderately Tight (632 m) |
| 82M 0550y - 82M 0660y | Â âš«-âš«âš«âš«-âš«Â | Extremely Flat (20,560 m) | Extremely Flat (20,560 m) |
| 82M 0660y - 82M 0770y |  🔴-🔴🔴🔴-🔴 | Very Tight (313 m) | Very Tight (313 m) |
| 82M 0770y - 82M 0880y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 82M 0880y - 82M 0990y |  🟠-🟠🟠🟠-🟠 | Moderately Tight (612 m) | Moderately Tight (612 m) |
| 82M 0990y - 82M 1100y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |
| 82M 1100y - 82M 1140y |  ⚪-⚪⚪⚪-⚪ | Straight | Straight |