Question

the curve For small deviation angle up to cates, cuble parabola and spiral are almost same.​

Answer 1

Answer:

Don't know

Explanation:

It's very difficult. You can ask this from your teacher

Answer 2

Explanation:

• IRC recommends Spiral or clothoid as the ideal transition curve due to some reasons.
• It satisfies the rate of change of centrifugal acceleration is constant i.e., Ls.R = constant, Where Ls = length of transition curve R = radius of curve.

• The calculation and field implementation of spiral curve is simple and easy.  
• It enhances aesthetics also.