Horizontal curvature for ELR EGM3 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 RangeFeatures
0M 0159y - 0M 0220y ⚪-⚪⚪⚪-⚪ StraightEGM3 / EGM4 interface
0M 0220y - 0M 0330y 🟢-🟢🟢🟢-🟢 Very Flat (15,548 m)Mound Tunnels
0M 0330y - 0M 0440y ⚫-⚫⚫⚫-⚫ Extremely Flat (32,170 m)Mound Tunnels
0M 0440y - 0M 0550y ⚪-⚪⚪⚪-⚪ Straight
0M 0550y - 0M 0660y 🟣-🟣🟣🟣-🟣 Moderate (1,788 m)
0M 0660y - 0M 0770y 🟠-🟣🟣🟣-🔵 Moderate (1,334 m)659 m → 3,477 m
0M 0770y - 0M 0880y ⭕-🔴🔴🔴-🟣 Very Tight (345 m)180 m → 1,994 m
0M 0880y - 0M 0990y 🟠-🟡🟡🟡-⚫ Moderate (893 m)373 m → 40,394 m
0M 0990y - 0M 1100y ⭕-🟠🟠🟠-🔵 Tight (361 m)175 m → 3,551 mHaymarket South Tunnel
0M 1100y - 0M 1210y 🔵-🔵🔵🔵-🔵 Flat (4,138 m)Haymarket South Tunnel
0M 1210y - 0M 1320y 🔵-🟢🟢🟢-🟢 Very Flat (5,460 m)4,967 m → 5,970 mHaymarket South Tunnel
0M 1320y - 0M 1430y 🟢-🟢🟢🟢-🟢 Very Flat (8,907 m)Haymarket South Tunnel
0M 1430y - 0M 1540y 🟢-🟢🟢🟢-🟢 Very Flat (5,289 m)Haymarket South Tunnel
0M 1540y - 0M 1650y ⚫-⚫⚫⚫-⚫ Extremely Flat (23,007 m)Haymarket South Tunnel
0M 1650y - 1M 0000y 🟡-🟣🟣🟣-🔵 Moderate (1,655 m)1,188 m → 2,701 mHaymarket South Tunnel
1M 0000y - 1M 0110y 🔵-🔵🔵🔵-🔵 Moderately Flat (2,326 m)2,081 m → 2,730 mHaymarket South Tunnel
1M 0110y - 1M 0220y 🔵-🔵🔵🔵-🔵 Flat (3,853 m)Haymarket South Tunnel
1M 0220y - 1M 0330y 🟠-🟣🟣🟣-🔵 Moderate (1,312 m)649 m → 4,075 mHaymarket South Tunnel; HAYMARKET
1M 0330y - 1M 0440y 🟠-🟡🟡🟡-🔵 Moderate (1,202 m)609 m → 3,077 mHAYMARKET
1M 0440y - 1M 0477y 🟠-🟠🟠🟠-🟠 Moderately Tight (731 m)HAYMARKET; EGM2 / EGM3 interface