14.1. Overview

Try these first

1. 1.

   What is horizontal alignment?

   Hint

   Think about what affects the way roads are shaped.

2. 2.

   What does design speed depend on?

   Hint

   Consider the differences between highways and local roads.

3. 3.

   What is the primary factor influencing horizontal alignment design?

   • Design Speed
   • Road Material
   • Traffic Volume

   Hint

   Consider what determines how we expect vehicles to interact with the road.

4. 4.

   True or False: Super elevation raises the inner edge of the pavement to help vehicles on curves.

   • True
   • False

   Hint

   Think about how curves are designed in relation to vehicle dynamics.

5. 5.

   Design a horizontal alignment for a new highway through mountainous terrain, including considerations for design speed and super elevation.

   Hint

   Think about the safest way to manage speed in an incline.

6. 6.

   Critique a poorly designed horizontal alignment in a case study. Identify specific issues it causes and propose design changes.

   Hint

   Reflect on real-world examples of harmful designs.