4.5. Example 2.5

Try these first

1. 1.

   What is super-elevation?

   Hint

   Think about how a banked track helps vehicles.

2. 2.

   What is a transition curve?

   Hint

   Consider the importance of comfort in turns.

3. 3.

   What is the purpose of super-elevation?

   • To improve visibility
   • To prevent skidding
   • To smoothen travel

   Hint

   Think about vehicle safety on turns.

4. 4.

   True or False: Vertical curves only connect horizontal alignments.

   • True
   • False

   Hint

   Visualize changing slopes on the road.

5. 5.

   Design a transition curve for a road that needs to accommodate a radius of 150 meters and a vehicle speed of 80 km/h. Calculate the necessary parameters and suggest practical approaches.

   Hint

   Ensure to balance all the forces acting on the vehicle while transitioning.

6. 6.

   Evaluate the implications if a vertical curve is poorly designed, leading to sudden elevation changes. Discuss potential real-life scenarios.

   Hint

   Think about the experience of driving on an uneven road in poor visibility conditions.