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From: A new, simple and accurate transition curve type, for use in road and railway alignment design
Projection | Clothoid | Cubic Parabola | SPTC (10 terms) | SPTC (3 terms) | SPTC (2 terms) |
---|---|---|---|---|---|
X(m) | Y(m) | Y(m) | Y(m) | Y(m) | Y(m) |
100 | 0.167 | 0.167 | 0.167 | 0.167 | 0.167 |
200 | 1.333 | 1.333 | 1.333 | 1.333 | 1.333 |
300 | 4.502 | 4.500 | 4.502 | 4.502 | 4.502 |
400 | 10.682 | 10.667 | 10.681 | 10.681 | 10.681 |
500 | 20.908 | 20.833 | 20.904 | 20.904 | 20.903 |
600 | 36.271 | 36.000 | 36.254 | 36.254 | 36.250 |
700 | 57.976 | 57.167 | 57.924 | 57.923 | 57.902 |
800 | 87.444 | 85.333 | 87.303 | 87.297 | 87.206 |
900 | 126.491 | 121.500 | 126.143 | 126.105 | 125.771 |
1000 | 177.678 | 166.667 | 176.858 | 176.661 | 175.595 |