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From: A new, simple and accurate transition curve type, for use in road and railway alignment design
Projection | Approximation | Clothoid | Cubic Parab. | SPTC (10) | SPTC (3) | SPTC (2) |
---|---|---|---|---|---|---|
X(m) | ΔX(m) | ΔX(m) | ΔX(m) | ΔX(m) | ΔX(m) | ΔX(m) |
100 | 0.00063 | 0.00021 | 0.00062 | 0.00000 | −0.00005 | −0.00005 |
200 | 0.02000 | 0.00667 | 0.01999 | 0.00000 | −0.00005 | −0.00004 |
300 | 0.15187 | 0.05062 | 0.15164 | 0.00000 | −0.00005 | 0.00018 |
400 | 0.64000 | 0.21327 | 0.63694 | 0.00000 | −0.00003 | 0.00301 |
500 | 1.95313 | 0.65053 | 1.93053 | 0.00000 | 0.00025 | 0.02260 |
600 | 4.86000 | 1.61738 | 4.74500 | 0.00000 | 0.00307 | 0.11548 |
700 | 10.50437 | 3.49096 | 10.05396 | 0.00000 | 0.02270 | 0.45372 |
800 | 20.48000 | 6.79180 | 19.03034 | 0.00000 | 0.12536 | 1.46384 |
900 | 36.90563 | 12.20138 | 32.90848 | 0.00000 | 0.55439 | 4.03497 |
1000 | 62.50000 | 20.57446 | 52.78640 | 0.00000 | 2.03807 | 9.73871 |