Terminology check: The practice of raising the outer edge of a roadway relative to the inner edge on a horizontal curve is known as what?

Introduction / Context:On horizontal curves, the pavement is “rotated” so that the outer edge is higher than the inner edge. This helps counteract the lateral acceleration on vehicles, reducing reliance on tyre–pavement friction alone and improving safety and comfort.

Given Data / Assumptions:

• Horizontal curve on a highway.
• Standard highway engineering terminology.
• No numeric values are required; this is a vocabulary question.

Concept / Approach:

The arrangement is variously called super-elevation (highway engineering term), cant (commonly used for railways and also informally for roads), and banking (general engineering term). All three refer to the same practical concept of tilting the roadway to balance lateral forces.

Step-by-Step Reasoning:

Verification / Alternative check:

Highway design manuals and basic mechanics of curvilinear motion support these equivalent terms in context.

Why Other Options Are Wrong:

• Choosing only one term would be incomplete since all are accepted descriptors for the same field practice.
• “None of these” contradicts standard nomenclature.

Common Pitfalls:

• Confusing super-elevation (cross slope on curves) with camber (cross fall on straights for drainage).

Final Answer:

All the above.