14.2. Design Speed

Try these first

1. 1.

   What is the design speed?

   Hint

   Think about speed limits.

2. 2.

   Describe how terrain affects design speed.

   Hint

   Consider examples of steep vs. flat terrains.

3. 3.

   What is the key factor that influences the design of horizontal alignment?

   • Design Speed
   • Terrain Type
   • Traffic Volume

   Hint

   Remember what we learned about the fundamental aspects of road design.

4. 4.

   True or False: Design speed is the same for all types of roads.

   • True
   • False

   Hint

   Think about national highways versus village roads.

5. 5.

   If a road is designated as mountainous, what design speed limits might be expected based on IRC guidelines?

   Hint

   Refer back to the IRC tables discussed in the section.

6. 6.

   Evaluate how the design speed would change if a national highway transitioned into a village road over a short distance.

   Hint

   Think about the characteristics of both road types.