Skip to main content

An Open Access Journal

Table 5 Deviation ΔR for different values of X

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)

ΔR(m)

ΔR(m)

ΔR(m)

ΔR(m)

ΔR(m)

ΔR(m)

100

0.04167

0.04167

0.04167

0.04167

0.04167

0.04167

200

0.33333

0.33333

0.33363

0.33335

0.33335

0.33335

300

1.12500

1.12492

1.13012

1.12524

1.12524

1.12525

400

2.66667

2.66606

2.70486

2.66850

2.66850

2.66870

500

5.20833

5.20543

5.38909

5.21710

5.21712

5.21942

600

9.00000

8.98959

9.63887

9.03157

9.03205

9.04875

700

14.29167

14.26107

16.13011

14.38539

14.39032

14.47809

800

21.33333

21.25548

25.86352

21.57540

21.61157

21.97114

900

30.37500

30.19768

40.24449

30.93898

31.14653

32.34456

1000

41.66667

41.29661

61.09386

42.88336

43.85947

47.17075