Track Superelevation Calculator
Calculate rail cant (superelevation) from curve radius and design speed using the AREMA formula e = 0.0007 × V²/R.
Inputs
mph
ft
in
in
Results
Equilibrium cant
0 in
Applied cant0 in
Cant deficiency0 in
Deficiency within limit1
Degree of curve2.86°
Max safe speed2,928.3 mph
Spiral run-off length0 ft
Lateral acceleration0 g
How to Use This Calculator
- Enter Design speed, Curve radius, and Max actual cant.
- Set Max cant deficiency.
- Review the Equilibrium cant (in) result.
- Use Applied cant (in) and Cant deficiency (in) to inform your decision.
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