2.2. Long answers

Try these first

1. 1.

   Define a circular curve in your own words.

   Hint

   Think about how roads are designed to connect points smoothly.

2. 2.

   What is a transition curve?

   Hint

   Consider how roads must allow for gradual turns.

3. 3.

   What is the purpose of a transition curve?

   • To connect two straight lines
   • To connect straight and circular paths
   • To curve abruptly

   Hint

   Think about how vehicles change path from straight to curved.

4. 4.

   True or False: Super-elevation is only needed in straight sections of a road.

   • True
   • False

   Hint

   Remember the role of curves in roadway design.

5. 5.

   Compute the radius for a curve if the angle of deflection is 15°.

   Hint

   Remember the formula for radius in circular curves.

6. 6.

   Evaluate the required super-elevation for a heavy vehicle traveling at 80 km/h on a curve of 300 m radius.

   Hint

   Apply the known values to the super-elevation formula rules.