3.10. Subramanian, R., (2012), Surveying and Levelling, Oxford University Press.

Try these first

1. 1.

   Define a circular curve.

   Hint

   Think about its shape and purpose in road design.

2. 2.

   What is a transition curve?

   Hint

   Consider how vehicles navigate turns.

3. 3.

   What is the main purpose of a transition curve?

   • To connect two straights
   • To facilitate a gradual change from straight to curved
   • To increase the degree of curvature

   Hint

   Consider how transitions help with changes in motion.

4. 4.

   True or False: Vertical curves can be parabolic or circular.

   • True
   • False

   Hint

   Think about the different shapes used in design.

5. 5.

   Design a road segment that requires both circular and transition curves for a highway with a deflection angle of 30°.

   Hint

   Use known formulas for radius and transition lengths based on design speed.

6. 6.

   Evaluate the advantages of implementing vertical parabolic curves over circular ones for highway safety.

   Hint

   Think of how different curves impact visibility and handling.