Question

The type of transition curves generally provided on hill road is

Answer 1

Usually spiral transition curve is preferred

Answer 2

The transitions curve provided on the hill is generally spiral.

When a vehicle roaming on a straight road arrives at a horizontal curve or hilly road instantaneously, it will result in disturbance to the driver. To avoid this, it is needed to give a transition curve. This may be given either between a tangent and a circular curve or between two trunks of a compound or overturn curve.

Different types of transition curves:

The types of transition curves commonly adopted in horizontal or hill alignment highways are:

• Spiral
• Bernoulli’s Lemniscate
• Cubic parabola