Horizontal curvature for ELR SAN 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 -045y - 0M 0000y 🔴-🔴🔴🔴-🟢 Very Tight (339 m)Very Tight (308 m) to Very Flat (9,491 m)
0M 0000y - 0M 0110y 🟠-🟠🟠🟠-🟠 Moderately Tight (617 m)Moderately Tight (617 m)
0M 0110y - 0M 0220y 🔴-🟠🟠🟠-🟠 Tight (368 m)Very Tight (233 m) to Moderately Tight (507 m)
0M 0220y - 0M 0330y ⭕-⭕⭕⭕-🟠 Extremely Tight (214 m)Extremely Tight (<100 m) to Tight (370 m)
0M 0330y - 0M 0440y ⭕-⭕⭕⭕-🔴 Extremely Tight (184 m)Extremely Tight (117 m) to Very Tight (226 m)
0M 0440y - 0M 0550y ⭕-🔴🔴🔴-🟠 Very Tight (274 m)Extremely Tight (189 m) to Moderately Tight (534 m)
0M 0550y - 0M 0660y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 0660y - 0M 0770y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 0770y - 0M 0880y ⚫-⚫⚫⚫-⚫ Extremely Flat (30,386 m)Extremely Flat (30,386 m)
0M 0880y - 0M 0990y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 0990y - 0M 1100y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 1100y - 0M 1210y ⭕-🔴🔴🔴-⚪ Very Tight (318 m)Extremely Tight (164 m) to Straight
0M 1210y - 0M 1320y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 1320y - 0M 1430y ⚪-⚪⚪⚪-⚪ StraightStraight
0M 1430y - 0M 1540y 🟡-🟡🟡🟡-🟡 Moderate (1,234 m)Moderate (1,234 m)
0M 1540y - 0M 1650y 🟠-🟠🟠🟠-🟠 Moderately Tight (742 m)Moderately Tight (742 m)
0M 1650y - 1M 0000y ⭕-🔴🔴🔴-⚪ Very Tight (300 m)Extremely Tight (149 m) to Straight
1M 0000y - 1M 0110y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 0110y - 1M 0220y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 0220y - 1M 0330y ⭕-🔴🔴🔴-⚪ Very Tight (343 m)Extremely Tight (128 m) to Straight
1M 0330y - 1M 0440y ⚪-⚪⚪⚪-⚪ StraightStraight
1M 0440y - 1M 0463y ⚪-⚪⚪⚪-⚪ StraightStraight