Civil Engineering - Transportation Engineering

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Question - 1

The design speed for a two lane road is 80 km/h. When a design vehicle with a wheel base of 6.6 m is negotiating a horizontal curve on the road, the off tracking is measured as 0.96 m.The required widening of carriage-way of the two lane road on the curve is approximately.

  • A 0.55 m
  • B 0.65 m
  • C 0.75 m
  • D 0.85 m

Question - 2

At a horizontal curve portion of a four lane undivided carriageway, a transition curve is to be introduced to attain required super-elevation.The design speed is 60 km/h and the radius of curve is 245m. Assume length of wheel base of a longest vehicle as 6m, super-elevation rate as 5% and rate of introduction of this super-elevation as 1 in 150.The length of transition curve(m) required, if the pavement is rotated about the inner edge is

  • A 81.4
  • B 85.0
  • C 91.5
  • D 110.2

Question - 3

The following data are related to a horizontally curved portion of a two-lane highway length of curve = 200 m, the radius of curve = 300 m and width of pavement = 7.5 m. In order to provide a stopping sight distance (SSD) of 80 m, the setback distance (in m) required from the centre line of the inner lane of the pavement is

  • A 2.54
  • B 4.55
  • C 7.10
  • D 7.96

Question - 4

For a horizontal highway curve of radius 400 m and length 200 m. The safe overtaking sight distance is 300 m. The distance between the centre lines of the road and the inner lane is 1.9 m. The setback distance required from the centre line on the inner side of the curve will be

  • A 26.8 m
  • B 14.4 m
  • C 12.4 m
  • D 4.4 m

Question - 5

While designing a hill road with a ruling gradient of 6%, if a sharp horizontal curve of 50 m radius is encountered, the compensated gradient at the curve as per IRC specifications should be

  • A 4.4%
  • B 4.75%
  • C 5.0%
  • D 5.25%

Question - 6

A crest vertical curve joints two gradients of +3% and -2% for a design speed of 80 km/h and the corresponding stopping sight distance of 120 m.The height of driver's eye and the object above the road surface are 1.20 m and 0.15, respectively.The curve length to be provided is

  • A 120 m
  • B 152 m
  • C 163 m
  • D 240 m

Question - 7

The terrain may be classified as rolling terrain of the cross slope is

  • A 0 to 10%
  • B 10 to 25 %
  • C 25 to 60 %
  • D >60%

Question - 8

The ruling design speed on a state highway in steep terrain as per IRC guidelines is

  • A 100 km/h
  • B 80 km/h
  • C 60 km/h
  • D 40 km/h

Question - 9

On a horizontal curve, to avoid overturning and lateral skidding, the value of impact factor should always be

  • A greater than b/2h and f
  • B greater than b/2h but less than f
  • C less than b/2h but greater than f
  • D less than both b/2h and f

Question - 10

For the design of super-elevation for mixed traffic conditions, the speed is reduced by

  • A 15%
  • B 25%
  • C 50%
  • D 75%
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