2.38. State the conditions to be fulfilled by a transition curve introduced between the tangent and circular curve.

Try these first

1. 1.

   What is a transition curve?

   Hint

   Think about how roads change direction smoothly.

2. 2.

   Define super-elevation.

   Hint

   What helps vehicles stay on the curve safely?

3. 3.

   What is a transition curve designed to do?

   • Facilitate rapid turns
   • Connect straight and circular paths
   • Increase speed

   Hint

   Think about how cars navigate from straight to curved paths.

4. 4.

   True or false: Super-elevation is only needed for steep curves.

   • True
   • False

   Hint

   Consider any situation where curves enhance safety.

5. 5.

   Calculate the minimum required length of a transition curve to safely accommodate a vehicle traveling at 60 km/h with a radius of 150 m of the circular curve.

   Hint

   Convert km/h to m/s and incorporate proper parameters.

6. 6.

   Evaluate the consequence of inadequate super-elevation on a transition curve with a radius of 100 m and a vehicle speed of 80 km/h.

   Hint

   Consider the balance of forces acting on a vehicle during a turn.