14. Horizontal alignment I

Try these first

1. 1.

   What is meant by design speed in highway engineering?

   Hint

   Think about the speed limits set for different types of roads.

2. 2.

   What is horizontal alignment?

   Hint

   Consider how a road curves and turns in a flat landscape.

3. 3.

   What is design speed primarily influenced by?

   • Type of Road
   • Vehicle Color
   • Time of Day

   Hint

   Think about how speed limits are determined.

4. 4.

   True or False: Super-elevation is only necessary for roads with curves.

   • True
   • False

   Hint

   Consider why straight roads do not need banking.

5. 5.

   A road has a curve with a radius of 100 m. What is the minimum super-elevation needed for a design speed of 20 m/sec? Assume g = 9.81 m/sec².

   Hint

   Make sure to use the right units when calculating.

6. 6.

   Evaluate what may happen if a highway is designed without accounting for terrain type. Discuss the potential safety hazards.

   Hint

   Think about the consequences of poor design due to lack of consideration for environmental factors.