13.7. Problems

Try these first

1. 1.

   Calculate the SSD for a vehicle traveling at 50 km/h with a coefficient of friction of 0.37.

   Hint

   Use the formula SSD = vt + (v² / 2gf).

2. 2.

   What is the maximum sight distance if it is determined that the vehicle needs to stop?

   Hint

   Remember to include reaction time.

3. 3.

   What is the formula for Stopping Sight Distance (SSD)?

   • SSD = vt + v² / 2g
   • SSD = v² / (2gf)
   • SSD = vt + fg

   Hint

   Remember that 'vt' accounts for the reaction time.

4. 4.

   True or False: OSD is only relevant for single-lane roads.

   • True
   • False

   Hint

   Think about multi-lane roads and overtaking situations.

5. 5.

   Design a stretch of road ensuring the SSD is adequate for a maximum speed of 100 km/h. Calculate the necessary parameters.

   Hint

   Consider friction and reaction time adjustments.

6. 6.

   Formulate and justify an appropriate OSD for an overtaking section on a highway with varying vehicle speeds.

   Hint

   Involve spacing norms and safety factors.