Q.1

If N is the net difference of grades, S is the minimum overtaken sight distance in metres, the length (L) of a summit curve, is

Q.2

The maximum safe speed on roads, depends on the

  • type of the highway
  • type of road surface
  • type of curves
  • sight distance
  • all the above.
Q.3

The basic formula for determination of pavement thickness was first suggested by

  • Spanglar
  • Picket
  • Kelly
  • Goldbeck
Q.4

Traffic engineering only includes

  • planning of regulatory measures
  • design and application of control devices
  • analysis of traffic characteristics
  • traffic opeation
  • all the above.
Q.5

Increase in traffic volume, due to increase in transport vehicles, is known as

  • development traffic
  • normal traffic growth
  • generated traffic growth
  • current traffic
  • none of these.
Q.6

For the movement of vehicles at an intersection of two roads, without any interference, the type of grade separator generally preferred to, is

  • delta
  • trumpet
  • diamond interchange
  • clover leaf.
Q.7

If R is the radius of a main curve and L is the length of the transition curve, the shift of the curve, is

  • L/24 R
  • L2/24 R
  • L3/24 R
  • L4/24 R
  • L/12 R
Q.8

If the ruling gradient on any highway is 3%, the gradient provided on the curve ofmetre radius, is

  • 2.00%
  • 2.25%
  • 2.50%
  • 2.75%
  • 3.00%
Q.9

A district road with a bituminous pavement has a horizontal curve ofm for a design speed ofkm ph. The super-elevation is

  • 1 in 40
  • 1 in 50
  • 1 in 60
  • 1 in 70
  • none of these.
Q.10

The weight of vehicles affects

  • pavement thickness
  • ruling gradient
  • limiting gradient
  • design of bridges
  • all the above.
Q.11

As per recommendations of I.R.C., traffic volume study is carried out for rural roads for 7 days continuously during

  • harvesing
  • lean season
  • harvesting and lean season
  • none of these.
Q.12

The minimum value of camber provided for thin bituminous surface hill roads, is

  • 2.2%
  • 2.5%
  • 3.0%
  • 3.5%
Q.13

The minimum ratio of the radii of two circular curves of a compound curve, is kept

  • 1.25
  • 1.5
  • 1.75
  • 2.0
Q.14

Reinforcement in cement concrete slab of road pavements, is placed

  • longitudinally
  • transversely
  • longitudinally and transversely
  • in the form of welded wire mesh
  • none of these.
Q.15

Design of horizontal and vertical alignments, super-elevation, sight distance and grades, is worst affected by

  • width of the vehicle
  • length of the vehicle
  • height of the vehicle
  • speed of the vehicle
Q.16

If d is the thickness of a concrete pavement, the equivalent radius b of resisting section for an interior loading, is

  • b = 0.6 + d2 - 0.675 d
  • b = 1.6 + d2 + 0.675 d
  • b = 1.6 + d2 - 3.675 d
  • b = 1.6 + d2 - 0.675 d
Q.17

Thickness of a pavement may be reduced considerably by

  • compaction of soil
  • stabilisation of soil
  • drainage of soil
  • combination of all the above.
Q.18

According to IRC : 52-for a single lane National Highway in hilly region,

  • width of the carriageway must be 3.75 m
  • shoulders on either side must be 1.25 m
  • total width of the road-way must be 6.25 m
  • total of the above.
Q.19

The total length of a valley formed by two gradients -and +curve between the two tangent points to provide a rate of change of centrifugal acceleration 0.6 m/sec2, for a design speedkm ph, is

  • 16.0 m
  • 42.3 m
  • 84.6 m
  • none of these.
Q.20

If x% is the gradient of an alignment and y% is the gradient after proper superelevation along a curved portion of a highway, the differential grade along the curve, is

  • (x + y)%
  • (x - y)%
  • (y - x)%
  • (x x y)%
  • (y + x)%
Q.21

In an ideal transition curve, the radius of curvature

  • is constant
  • at any point is directly proportional to its distance from the point of commencement
  • is inversely proportional to the radius of main curve
  • is directly proportional to the radius of main curve
Q.22

The width of pavement in addition to a gravelled berm 1 m on either side for a two directional traffic recommended by Nagpur Conference of Chief Engineers, is

  • 4.7 m
  • 5.7 m
  • 6.7 m
  • 7.7 m
  • 8.7 m
Q.23

Before providing super-elevation on roads, the portion of the carriageway between the crown and the outer edge is made

  • to have a reduced fall
  • horizontal
  • to have slope of the camber on the other half of the carriageway
  • none of these.
Q.24

When load is applied on concrete pavement

  • away from edges, the maximum bending moment is negative
  • away from edges, the maximum bending moment cause compression
  • on the edges, the maximum stress is parallel to the edge of the slab
  • none of these.
Q.25

The length of a transition curve, is governed by

  • rate of change of radial acceleration
  • rate of change of super-elevation
  • both (a) and (b)
  • neither (a) nor (b)
Q.26

Widening of the roads on curves in hilly region, is done

  • on the outer side
  • on the inner side
  • on the outer and inner sides equally
  • less on outer side and more on inner side.
Q.27

Pick up the correct statement from the following:

  • The corss fall of the shoulder should be at least 0.5% steeper than camber
  • On superelevated sections, the shoulders should be provided a cross fall equal to camber
  • Earthern roads in general are provided steepest crossfall
  • All the above.
Q.28

Customers prefer parking of their vehicles at

  • 90° to aisles
  • 85° to aisles
  • 80° to aisles
  • 75° to aisles
  • 60° to aisles
Q.29

Pick up the incorrect statement from the following. On highways circular curves may be

  • simple curves
  • compound curves
  • reverse curves
  • vertical curves
  • all the above.
Q.30

Along horizontal curves, if centrifugal force exceeds lateral friction, vehicles may

  • skid
  • slip
  • not be affected
  • none of these.
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