2.34. List the requirements to be satisfied in setting out a transition curve.

Try these first

1. 1.

   What does a transition curve connect?

   Hint

   Think about road design.

2. 2.

   Why is length important for transition curves?

   Hint

   Consider braking and steering dynamics.

3. 3.

   What is a transition curve primarily used for?

   • Connecting two straight roads
   • Facilitating smooth vehicle turns
   • Limiting vehicle speed

   Hint

   Think about road safety and design.

4. 4.

   True or False: Super-elevation helps balance the forces acting on a vehicle during a turn.

   • True
   • False

   Hint

   Consider how banking affects vehicles.

5. 5.

   Calculate the minimum length of a transition curve required for a highway designed for a speed of 100 km/h, considering a rate of change of alignment of 1.5 degrees per second.

   Hint

   Remember to convert your speed to m/s.

6. 6.

   A road has a transition curve that currently has inadequate super-elevation leading to vehicle stability issues. Propose a modification to the road's design to enhance safety.

   Hint

   Consider how much to tilt the road surface toward the center of the curve.