Horizontal curvature for ELR PDB 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.

MileageSchematicAverage RadiusRadius Range
0M -203y - 0M -110y ⚪-⚪⚪⚪-⚪ StraightStraight
0M -110y - 0M 0000y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 0000y - 0M 0110y ⭕-⭕⭕⭕-⚪ Extremely Tight (216 m)Extremely Tight (<100 m) to Straight
0M 0110y - 0M 0220y ⭕-⭕⭕⭕-⭕ Extremely Tight (132 m)Extremely Tight (101 m to 153 m)
0M 0220y - 0M 0330y ⭕-⭕⭕⭕-⭕ Extremely Tight (175 m)Extremely Tight (129 m to 212 m)
0M 0330y - 0M 0440y ⭕-⭕⭕⭕-🔴 Extremely Tight (194 m)Extremely Tight (131 m) to Very Tight (250 m)
0M 0440y - 0M 0550y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 0550y - 0M 0660y 🔵-🔵🔵🔵-🔵 Flat (4,041 m)Flat (4,041 m)
0M 0660y - 0M 0770y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 0770y - 0M 0880y 🟠-🟠🟠🟠-🟠 Tight (499 m)Tight (385 m) to Moderately Tight (605 m)
0M 0880y - 0M 0990y 🔴-🟠🟠🟠-🟠 Tight (417 m)Very Tight (336 m) to Tight (478 m)
0M 0990y - 0M 1100y 🟠-🟠🟠🟠-🟠 Moderately Tight (570 m)Tight (431 m) to Moderately Tight (722 m)
0M 1100y - 0M 1210y 🔴-🟠🟠🟠-🟠 Tight (350 m)Very Tight (277 m) to Tight (493 m)
0M 1210y - 0M 1320y 🟠-🟠🟠🟠-🟠 Tight (436 m)Tight (419 m to 453 m)
0M 1320y - 0M 1430y 🔵-🔵🔵🔵-🔵 Moderately Flat (2,691 m)Moderately Flat (2,691 m)
0M 1430y - 0M 1540y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 1540y - 0M 1650y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 1650y - 1M 0000y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 0000y - 1M 0110y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 0110y - 1M 0220y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 0220y - 1M 0330y 🟣-🟣🟣🟣-🟣 Moderate (1,423 m)Moderate (1,423 m)
1M 0330y - 1M 0440y 🟡-🟡🟡🟡-🟡 Moderate (1,239 m)Moderate (1,239 m)
1M 0440y - 1M 0550y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 0550y - 1M 0660y 🟠-🟠🟠🟠-🟠 Tight (448 m)Tight (432 m to 461 m)
1M 0660y - 1M 0770y 🟠-🟠🟠🟠-🟠 Tight (406 m)Tight (359 m to 447 m)
1M 0770y - 1M 0880y ⭕-🔴🔴🔴-🟠 Very Tight (270 m)Extremely Tight (195 m) to Tight (454 m)
1M 0880y - 1M 0990y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 0990y - 1M 1100y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 1100y - 1M 1210y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 1210y - 1M 1320y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 1320y - 1M 1430y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 1430y - 1M 1540y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 1540y - 1M 1565y ⚪-⚪⚪⚪-⚪ StraightStraight