The Ideal Shape of a Transition Curve is

Answer: D. Clothoid

The ideal shape of a transition curve is clothoid.

Solution

A transition Curve is provided to avoid sudden reduction of radius and the sudden introduction of superelevation, extra widening, and Centrifugal force.

Types of transition curve are given below.

1. Spiral or Clothoid
2. Cubic Parabola
3. Lemniscate

As per IRC the ideal shape of a transition curve is clothoid or spiral.

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