Horizontal curvature for ELR BNG 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 | Features |
|---|---|---|---|---|
| 8M 1367y - 8M 1430y | 🟠-🟠🟠🟠-🟠| Moderately Tight (545 m) | ||
| 8M 1430y - 8M 1540y | 🟠-🟠🟠🟠-🟠| Moderately Tight (534 m) | ||
| 8M 1540y - 8M 1650y | 🔴-🟡🟡🟡-⚪ | Moderate (756 m) | 225 m → Straight | GROVE PARK |
| 8M 1650y - 9M 0000y | 🔴-🟠🟠🟠-🟠| Tight (421 m) | 280 m → 533 m | GROVE PARK |
| 9M 0000y - 9M 0110y | 🟢-🟢🟢🟢-🟢 | Very Flat (12,616 m) | GROVE PARK | |
| 9M 0110y - 9M 0220y | â•-🔴🔴🔴-⚪ | Very Tight (264 m) | <100 m → Straight | GROVE PARK; Grove Park Jn |
| 9M 0220y - 9M 0330y | â•-🔴🔴🔴-🔴 | Very Tight (259 m) | 186 m → 319 m | |
| 9M 0330y - 9M 0440y | 🟠-🟠🟠🟠-🟠| Tight (445 m) | 362 m → 510 m | |
| 9M 0440y - 9M 0550y | 🟠-🟠🟠🟠-🟠| Moderately Tight (653 m) | ||
| 9M 0550y - 9M 0660y | 🟠-🟠🟠🟠-🟠| Tight (461 m) | 443 m → 480 m | |
| 9M 0660y - 9M 0770y | 🟠-🟠🟠🟠-🟠| Tight (486 m) | 465 m → 504 m | |
| 9M 0770y - 9M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 9M 0880y - 9M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 9M 0990y - 9M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 9M 1100y - 9M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 9M 1210y - 9M 1320y | 🟠-🟡🟡🟡-🟣 | Moderate (863 m) | 501 m → 1,871 m | |
| 9M 1320y - 9M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 9M 1430y - 9M 1540y | 🟠-🟠🟠🟠-🟠| Moderately Tight (558 m) | ||
| 9M 1540y - 9M 1650y | 🟠-🟠🟠🟠-🟠| Moderately Tight (625 m) | ||
| 9M 1650y - 10M 0000y | 🟡-🟡🟡🟡-🟡 | Moderate (953 m) | ||
| 10M 0000y - 10M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 10M 0110y - 10M 0220y | 🟠-🟠🟠🟠-🟠| Moderately Tight (501 m) | SUNDRIDGE PARK | |
| 10M 0220y - 10M 0330y | 🟠-🟠🟠🟠-🟠| Moderately Tight (620 m) | SUNDRIDGE PARK | |
| 10M 0330y - 10M 0440y | 🟠-🟠🟠🟠-🟠| Moderately Tight (522 m) | 444 m → 581 m | SUNDRIDGE PARK |
| 10M 0440y - 10M 0550y | 🟠-🟠🟠🟠-🟠| Moderately Tight (537 m) | 442 m → 707 m | |
| 10M 0550y - 10M 0660y | 🟣-🟣🟣🟣-🟣 | Moderate (1,820 m) | ||
| 10M 0660y - 10M 0770y | 🟠-🔵🔵🔵-⚪ | Moderately Flat (2,037 m) | 481 m → Straight | |
| 10M 0770y - 10M 0880y | 🟣-🟣🟣🟣-🟣 | Moderate (1,533 m) | BROMLEY NORTH | |
| 10M 0880y - 10M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | BROMLEY NORTH | |
| 10M 0990y - 10M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | BROMLEY NORTH | |
| 10M 1100y - 10M 1145y | ⚪-⚪⚪⚪-⚪ | Straight |