2.3. Simple Circular Curves

Try these first

1. 1.

   What is a simple circular curve?

   Hint

   Think about how a simple bend in the road would look.

2. 2.

   Define the term 'tangent length'.

   Hint

   Consider where the curve begins and ends.

3. 3.

   What is the angle between the two tangents at the intersection point called?

   • Deflection Angle
   • Central Angle
   • Tangent Angle

   Hint

   Recall the angle terminology for curves.

4. 4.

   True or False: The apex of a curve is the highest point of the curve.

   • True
   • False

   Hint

   Think about where you would find the apex.

5. 5.

   A road has a simple circular curve with a radius of 60m and a deflection angle of 45 degrees. Calculate the length of the curve.

   Hint

   Use the conversion factor of π/180.

6. 6.

   Design a section of a roadway that requires a simple circular curve with specific design parameters—describe the required components.

   Hint

   Sketching might help visualize the curve layout.