Horizontal Alignment of Highways - IES Previous Year Questions

31. In case of horizontal curves in pavement, the purpose of super elevation or banking of curve is to _____ .

[IES 2022]

  1. Provide proper cross-drainage
  2. Prevent vehicle from sliding inwards 
  3. Make road look good
  4. Counteract the centripetal acceleration produced as a vehicle rounds a curve
Answer: Option D
Explanation:
The purposes of providing super elevation are as follows:
  • To counteract the effect of centripetal force.
  • To reduce the tendency of the vehicle to overturn or skid.

32.  A vehicle has wheel base of 6.5 m. What is the off tracking while negotiating a curved path with a mean radius 32 m ?

[IES 2022]

  1. 1.15 m
  2. 0.86 m
  3. 0.66 m
  4. 1.32 m
Answer: Option C
Explanation:
Off-tracking =
L2 / 2R
=
6.522 / 2 x 32
= 0.66 m
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