Reference · road & bridge standards

Superelevation on Bends

Superelevation, or 'banking', on road bends is a design feature that helps vehicles safely navigate curves by counteracting centrifugal forces.

When a vehicle travels around a bend, it experiences an outward centrifugal force. Superelevation involves tilting the road surface upwards towards the outside of the bend, which helps to balance this force and improve vehicle stability. The degree of superelevation is carefully calculated based on the bend's radius, design speed, and friction characteristics, ensuring a comfortable and safe driving experience.

Source: Design Manual for Roads and Bridges (DMRB), specifically CD 109 'Geometric Design of Single and Dual Carriageways'

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Last updated 2026-08-05. This is a living record — findings are added as dated entries and prior versions remain visible.