# 4 Requirements of an Ideal Transition Curve In Railway

9th April 2019**4 Requirements of an ideal Transition Curve In Railway**

Following are the 4 essential requirements of an ideal transition **curve**:

1. It should be perfectly tangential to the straight.

2. The **length of the transition curve** should be such that curvature may increase at the same rate as the **superelevation**.

3. This curve should join the circular are tangentially.

4. Its radius of curvature should vary from infinite value at the tangent to a finite value at the junction with the circular curve and vice versa.

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Transition Curve In Highway-Objects || Types || Essential Requirement