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Q.1
If the average center to center spacing of vehicles is 20 meters, then the basic capacity of a traffic lane at a speed of 50 kmph is
2500 vehicles per day
2000 vehicles per hour
2500 vehicles per hour
1000 vehicles per hour
Q.2
Bottom most layer of pavement is known as
wearing course
base course
sub-base course
subgrade
Q.3
Which of the following methods is preferred for collecting origin and destination data for a small area like a mass business center or a large intersection ?
road side interview method
license plate method
return postcard method
home interview method
Q.4
In highway construction on super elevated curves, the rolling shall proceed from
sides towards the centre
centre towards the sides
lower edge towards the upper edge
upper edge towards the lower edge
Q.5
In case of hill roads, the extra widening is generally provided
equally on inner and outer sides of the curve
fully on the inner side of the curve
fully on the outer side of the curve
one-fourth on inner side and three-fourth on outer side of the curve
Q.6
On a horizontal curve if the pavement is kept horizontal across the alignment, then the pressure on the outer wheels will be
more than the pressure on inner wheels
less than the pressure on inner wheels
equal to the pressure on inner wheels
zero
Q.7
Desire lines are plotted in
traffic volume studies
speed studies
accident studies
origin and destination studies
Q.8
The shape of the camber, best suited for cement concrete pavements, is
straight line
parabolic
elliptical
combination of straight and parabolic
Q.9
The attainment of super elevation by rotation of pavement about the inner edge of the pavement
is preferable in steep terrain
results in balancing the earthwork
avoids the drainage problem in flat terrain
does not change the vertical alignment of road
Q.10
The ruling design speed on a National Highway in plain terrain as per IRC recommendations is
60 kmph
80 kmph
100 kmph
120 kmph
Q.11
The percentage compensation in gradient for ruling gradient of 4% and horizontal curve of radius 760 m is
0.1 %
1 %
10%
no compensation
Q.12
Select the correct statement.
More the value of group index, less thickness of pavement will be required
More the value of CBR, greater thickness of pavement will be required
Minimum and maximum values of group index can be 0 and 20 respectively
All of the above
Q.13
The number of repetitions, which the pavement thickness designed for a given wheel load should be able to support during the life of pavement is
1000
10000
100000
1000000
Q.14
The function of an expansion joint in rigid pavements is to
Relieve warping stresses
Relieve shrinkage stresses
Resist stresses due to expansion
Allow free expansion
Q.15
The diagram which shows the approximate path of vehicles and pedestrians involved in accidents is known as
spot maps
pie charts
condition diagram
collision diagram
Q.16
If the design speed is V kmph and deviation angle is N radians, then the total length of a valley curve in meters is given by the expression
0.38 N V3/2
0.38 (NV3)”2
3.8 NV”2
3.8 (NV3)”2
Q.17
RC-2, MC-2 and SC-2 correspond to
same viscosity
viscosity in increasing order from RC-2 to SC-2
viscosity in decreasing order from RC-2 to SC-2
none of the above
Q.18
The most suitable equipment for compacting clayey soils is a
smooth wheeled roller
pneumatic tyred roller
sheep foot roller
vibrator
Q.19
The critical combination of stresses for corner region in cement concrete roads is
Load stress + warping stress frictional stress
Load stress + warping stress + frictional stress
Load stress + warping stress
Load stress + frictional stress
Q.20
The desirable length of overtaking zone as per IRC recommendation is equal to
overtaking sight distance
two times the overtaking sight distance
three times the overtaking sight distance
five times the overtaking sight distance
Q.21
Most suitable material for highway embankments is
granular soil
organic soil
silts
clays
Q.22
The transition curve used in the horizontal alignment of highways as per IRC recommendations is
spiral
lemniscate
cubic parabola
any of the above
Q.23
If the stopping distance and average length of a vehicle are 18 m and 6 m respectively, then the theoretical maxi¬mum capacity of a traffic lane at a speed of 10 m/sec is
1500 vehicles per hour
2000 vehicles per hour
2500 vehicles per hour
3000 vehicles per hour
Q.24
The absolute minimum radius of curve for safe operation for a speed of 110 kmph is
110 m
220 m
440 m
577 m
Q.25
Which of the following is known as design capacity ?
basic capacity
theoretical capacity
possible capacity
practical capacity
Q.26
Enoscope is used to find
average speed
spot speed
space-mean speed
time-mean speed
Q.27
If an ascending gradient of 1 in 50 meets a descending gradient of 1 in 50, the length of summit curve for a stopping sight distance of 80 m will be
zero
64m
80m
60m
Q.28
Equivalent factor of passenger car unit (PCU) for a passenger car as per IRC is
1.0
2.0
0.5
10
Q.29
When two equally important roads cross roughly at right angles, the suitable shape of central island is
circular
elliptical
tangent
turbine
Q.30
Which of the following is considered to be the highest quality construction in the group of black top pavements?
Mastic asphalt
Sheet asphalt
Bituminous carpet
Bituminous concrete
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