13.2.2. Intermediate Sight Distance (ISD)

Try these first

1. 1.

   What does ISD stand for?

   Hint

   Think about sight distance in traffic scenarios.

2. 2.

   What is SSD?

   Hint

   It's involved in safety calculations for vehicles.

3. 3.

   What is the formula for calculating ISD?

   • ISD = SSD / 2
   • ISD = 2 x SSD
   • ISD = SSD + Reaction Time

   Hint

   Remember the relationship between ISD and SSD.

4. 4.

   True or False: ISD is less important than SSD for road safety.

   • True
   • False

   Hint

   Think about overtaking scenarios.

5. 5.

   A vehicle travels at 80 km/h on a flat road. Calculate the ISD if SSD is computed to be 100 meters.

   Hint

   Use the relationship between ISD and SSD.

6. 6.

   Two vehicles, one traveling at 120 km/h and the other at 60 km/h, approach a passing lane. How should ISD be adjusted based on their speeds?

   Hint

   Consider how speed affects stopping distance needs.