Horizontal curvature for ELR HAM 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
11M 1417y - 11M 1430y ⚪-⚪⚪⚪-⚪ StraightStraight
11M 1430y - 11M 1540y 🟡-🟡🟡🟡-🟡 Moderate (1,089 m)Moderate (1,089 m)
11M 1540y - 11M 1650y 🟠-🟣🟣🟣-🔵 Moderate (1,346 m)Moderately Tight (737 m) to Moderately Flat (2,931 m)
11M 1650y - 12M 0000y 🟢-🟢🟢🟢-🟢 Very Flat (5,629 m)Very Flat (5,011 m to 6,398 m)
12M 0000y - 12M 0110y 🟠-🟡🟡🟡-🟡 Moderate (864 m)Moderately Tight (739 m) to Moderate (1,047 m)
12M 0110y - 12M 0220y 🟠-🟠🟠🟠-🔵 Moderately Tight (719 m)Tight (393 m) to Flat (4,498 m)
12M 0220y - 12M 0330y 🟠-🟡🟡🟡-🟣 Moderate (828 m)Tight (471 m) to Moderate (1,438 m)
12M 0330y - 12M 0440y 🔵-🔵🔵🔵-🔵 Flat (3,102 m)Flat (3,102 m)
12M 0440y - 12M 0550y ⚪-⚪⚪⚪-⚪ StraightStraight
12M 0550y - 12M 0660y ⚫-⚫⚫⚫-⚪ Extremely Flat (42,875 m)Extremely Flat (31,496 m) to Straight
12M 0660y - 12M 0770y ⚪-⚪⚪⚪-⚪ StraightStraight
12M 0770y - 12M 0880y ⚪-⚪⚪⚪-⚪ StraightStraight
12M 0880y - 12M 0990y ⚪-⚪⚪⚪-⚪ StraightStraight
12M 0990y - 12M 1100y ⚪-⚪⚪⚪-⚪ StraightStraight
12M 1100y - 12M 1210y ⚪-⚪⚪⚪-⚪ StraightStraight
12M 1210y - 12M 1320y ⚪-⚪⚪⚪-⚪ StraightStraight
12M 1320y - 12M 1430y ⚪-⚪⚪⚪-⚪ StraightStraight
12M 1430y - 12M 1540y 🟣-🟣🟣🟣-🟣 Moderate (1,595 m)Moderate (1,410 m to 1,850 m)
12M 1540y - 12M 1650y 🔵-🔵🔵🔵-🔵 Flat (3,513 m)Flat (3,513 m)
12M 1650y - 13M 0000y 🟡-🟡🟡🟡-🟡 Moderate (1,240 m)Moderate (1,240 m)
13M 0000y - 13M 0110y 🔵-🔵🔵🔵-🔵 Flat (3,100 m)Flat (3,100 m)
13M 0110y - 13M 0220y ⚪-⚪⚪⚪-⚪ StraightStraight
13M 0220y - 13M 0330y ⚪-⚪⚪⚪-⚪ StraightStraight
13M 0330y - 13M 0440y ⚪-⚪⚪⚪-⚪ StraightStraight
13M 0440y - 13M 0550y 🟠-🟠🟠🟠-🟠 Moderately Tight (544 m)Tight (364 m) to Moderately Tight (695 m)
13M 0550y - 13M 0660y ⭕-🟠🟠🟠-⚪ Tight (431 m)Extremely Tight (144 m) to Straight
13M 0660y - 13M 0770y 🔴-🟠🟠🟠-🟠 Tight (414 m)Very Tight (258 m) to Moderately Tight (662 m)
13M 0770y - 13M 0880y 🟠-🟠🟠🟠-🟠 Moderately Tight (506 m)Moderately Tight (506 m)
13M 0880y - 13M 0990y 🔴-🔴🔴🔴-🟠 Very Tight (324 m)Very Tight (227 m) to Tight (399 m)
13M 0990y - 13M 1100y ⭕-🔴🔴🔴-🟠 Very Tight (297 m)Extremely Tight (182 m) to Tight (356 m)
13M 1100y - 13M 1210y 🔴-🔴🔴🔴-🟠 Very Tight (350 m)Very Tight (247 m) to Tight (416 m)
13M 1210y - 13M 1320y 🔴-🔴🔴🔴-🟠 Very Tight (333 m)Very Tight (251 m) to Moderately Tight (518 m)
13M 1320y - 13M 1430y 🟠-🟠🟠🟠-🟡 Moderately Tight (575 m)Tight (373 m) to Moderate (1,056 m)
13M 1430y - 13M 1540y ⚪-⚪⚪⚪-⚪ StraightStraight
13M 1540y - 13M 1650y ⚪-⚪⚪⚪-⚪ StraightStraight
13M 1650y - 14M 0000y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 0000y - 14M 0110y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 0110y - 14M 0220y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 0220y - 14M 0330y 🟣-🟣🟣🟣-🟣 Moderate (1,556 m)Moderate (1,335 m to 1,867 m)
14M 0330y - 14M 0440y 🔵-🔵🔵🔵-🔵 Moderately Flat (2,890 m)Moderately Flat (2,890 m)
14M 0440y - 14M 0550y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 0550y - 14M 0660y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 0660y - 14M 0770y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 0770y - 14M 0880y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 0880y - 14M 0990y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 0990y - 14M 1100y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 1100y - 14M 1210y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 1210y - 14M 1320y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 1320y - 14M 1430y 🟠-🟡🟡🟡-⚫ Moderate (944 m)Moderately Tight (584 m) to Extremely Flat (34,118 m)
14M 1430y - 14M 1540y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 1540y - 14M 1650y ⚪-⚪⚪⚪-⚪ StraightStraight
14M 1650y - 15M 0000y ⚫-⚪⚪⚪-⚪ StraightExtremely Flat (42,683 m) to Straight
15M 0000y - 15M 0090y ⚪-⚪⚪⚪-⚪ StraightStraight