1/ Calculation of equilibrium superelevation

C: Equilibrium superelevation

C = 8.338V2/RV: Traveling speed

R: Curve radius

2/ Standard actual superelevation

This is a value obtained by multiplying the equilibrium superelevation of a speed obtained by adding 5 km/h to the maximum speed of a train by 2/3.

Cm = (2/3) x 8.338 (V + 5)2/R

= 5.5587 (V + 5)2/R

Cm: Actual superelevationV: Maximum speed of train

R: Curve radius

3/ Maximum actual superelevation90 m

4/ Maximum superelevation deficiency50 m

(c) Transition curve

Length of transition curve

1/ Speed exceeding 70 km/h700 times or more longer than actual superelevation (600 times for an unavoidable case)

2/ Speed equal to or less than 70 km/h600 times or more longer than actual superelevation (400 times for an unavoidable case)

3/ Preferable length800 to 1,000 times of actual superelevation

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