HIGHWAY ENGINEERING QUIZ

Most suitable material for highway embankments is

silts

granular soil

organic soil

clays

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Camber in the road is provided for

having proper sight distance

effective drainage

None of these

counteracting the centrifugal force

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The most economical lighting layout which is suitable for narrow roads is

None of these

Staggered system

Central lighting system

Single side lighting

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The transition curve used in the horizontal alignment of highways as per IRC recommendations is

spiral

cubic parabola

Any of these

lemniscate

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The maximum thickness of expansion joint in rigid pavements is

10 mm

100 mm

25 mm

50 mm

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The ductility value of bitumen for suitability in road construction should not be less than

20 cm

10 cm

50cm

30 cm

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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

60m

64m

zero

80m

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Equivalent factor of passenger car unit (PCU) for a passenger car as per IRC is

10

0.5

1.0

2.0

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The group index for a soil, whose liquid limit is 40 percent, plasticity index is 10 percent and percentage passing 75 micron IS sieve is 35, is

7

0

3

5

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Length of a vehicle affects

extra width of pavement and minimum turning radius

width of shoulders and parking facilities

width of traffic lanes

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

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