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Q: For stopping sight distance the eye level should be at :
  • A. 1.2m
  • B. 0.75 m
  • C. 1.6m
  • D. 1.8m
Correct Answer: Option A - • IRC has suggested the height of eye level of driver as 1.2m and the height of the object as 0.15m above the road surface. • IRC has also recommended the value of reaction time t = 2.5 sec. for the calculation of stopping distance. • At vertical summit curves the height of driver's eye and the object above road level are more important factors affecting the visibility.
A. • IRC has suggested the height of eye level of driver as 1.2m and the height of the object as 0.15m above the road surface. • IRC has also recommended the value of reaction time t = 2.5 sec. for the calculation of stopping distance. • At vertical summit curves the height of driver's eye and the object above road level are more important factors affecting the visibility.

Explanations:

• IRC has suggested the height of eye level of driver as 1.2m and the height of the object as 0.15m above the road surface. • IRC has also recommended the value of reaction time t = 2.5 sec. for the calculation of stopping distance. • At vertical summit curves the height of driver's eye and the object above road level are more important factors affecting the visibility.