16.2. Horizontal Transition Curves

Try these first

1. 1.

   What is a transition curve?

   Hint

   Think about how roads connect without sudden turns.

2. 2.

   Name one objective of a transition curve.

   Hint

   Consider how it affects driving smoothness.

3. 3.

   What is the purpose of a transition curve?

   • To increase speed
   • To ensure gradual changes in direction
   • To eliminate curves

   Hint

   Think about how abrupt changes affect driving.

4. 4.

   True or False: Super-elevation is applied suddenly at a circular curve.

   • True
   • False

   Hint

   Consider how road design affects vehicle stability.

5. 5.

   Calculate the appropriate length of a transition curve for a given speed and radius using the formulas provided in class.

   Hint

   You need to consider the rate of change in both acceleration and super-elevation.

6. 6.

   Evaluate the benefits of implementing a spiral curve versus a cubic parabola in a specific road design context.

   Hint

   Outline which aspects matter most in road design.