12.1. Overview

Try these first

1. 1.

   What is the purpose of camber in road design?

   Hint

   Think about what happens when rain falls on a level surface.

2. 2.

   Explain what an Unevenness Index represents.

   Hint

   Consider how smooth a road must be.

3. 3.

   What is the main purpose of providing camber in the pavement?

   • To improve aesthetics
   • To facilitate drainage
   • To reduce construction costs

   Hint

   Consider what happens when it rains.

4. 4.

   True or False: An unevenness index value over 3200 mm/km indicates a comfortable ride.

   • True
   • False

   Hint

   Think about the implications of uneven surfaces.

5. 5.

   Design a pavement cross-section considering friction and drainage for a hilly terrain where heavy rain is common. What factors would you prioritize?

   Hint

   Consider how water flows and how vehicles interact with surfaces.

6. 6.

   Evaluate a real-life situation: a city implemented low-friction asphalt on a busy roadway. Discuss potential consequences of this decision.

   Hint

   Reflect on what quality must be prioritized in road safety.