Horizontal curvature for ELR CDY 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 |
|---|---|---|---|---|
| 29M 1619y - 29M 1650y | ⭕-⭕⭕⭕-🟠 | Extremely Tight (180 m) | <100 m → 385 m | Chelmsford Jn |
| 29M 1650y - 30M 0000y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (693 m) | 558 m → 827 m | |
| 30M 0000y - 30M 0110y | 🔴-🟠🟠🟠-🟡 | Moderately Tight (632 m) | 272 m → 1,153 m | |
| 30M 0110y - 30M 0220y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (648 m) | 472 m → 848 m | |
| 30M 0220y - 30M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 30M 0330y - 30M 0440y | 🔵-🔵🔵🔵-🔵 | Flat (3,804 m) | ||
| 30M 0440y - 30M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 30M 0550y - 30M 0563y | ⚪-⚪⚪⚪-⚪ | Straight |