HIGHWAY ENGINEERING QUIZ

When the bituminous surfacing is done on already existing black top road or over existing cement concrete road, the type of treatment given is

Spray of emulsion

Seal coat

Tack coat

Prime coat

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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

3000 vehicles per hour

2000 vehicles per hour

2500 vehicles per hour

1500 vehicles per hour

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As per IRC recommendations, the average level of illumination on important roads carrying fast traffic is

30 lux

10 lux

15 lux

20 lux

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If b is the wheel track of a vehicle and h is the height of centre of gravity above road surface, then to avoid overturning and lateral skidding on a horizontal curve, the centrifugal ratio should always be

greater than b/2h and also greater than coefficient of lateral friction

greater than b/2h and less than co-efficient of lateral friction

less than b/2h and also less than co-efficient of lateral friction

less than b/2h and greater than co-efficient of lateral friction

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Length of a vehicle affects

width of traffic lanes

clearance to be provided under structures such as overbridges, under-bridges etc.

width of shoulders and parking facilities

extra width of pavement and minimum turning radius

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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 hour

2000 vehicles per hour

1000 vehicles per hour

2500 vehicles per day

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Coefficient of friction is less when the pavement surface is

rough

dry

smooth and dry

smooth and wet

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The maximum allowable Los Angeles abrasion value for high quality surface course is

0.2

0.45

0.3

0.1

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The attainment of super elevation by rotation of pavement about the inner edge of the pavement

avoids the drainage problem in flat terrain

is preferable in steep terrain

does not change the vertical alignment of road

results in balancing the earthwork

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Most suitable material for highway embankments is

clays

organic soil

silts

granular soil

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