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Horizontal Curve & Superelevation
Minimum radius, curve elements, superelevation and widening for road curves.
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About this test
Enter design speed and superelevation.
How it's calculated
- R = V²/(127(e + f))
Results are calculated from the values you enter using standard formulas. Download the PDF to keep a record. For certified testing, design or construction, talk to our engineers.
Cite this tool
Kataria Engineering & Consultancy Services (2026). Horizontal Curve & Superelevation [online calculator]. https://katariaengineering.com/tools/horizontal-curve-superelevation.html
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