162.  Cement grouted pavement is classified as
A. rigid pavement
B. semi-rigid pavement
C. flexible pavement
D. none of these.

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163.  Thickness of a pavement may be reduced considerably by
A. compaction of soil
B. stabilisation of soil
C. drainage of soil
D. combination of all the above.

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164.  Minimum thickness of the base of a flexible pavement, is
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm

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165. For a poorly graded sub-grade soil, thickness of subbase, is
A. 10 cm
B. 15 cm
C. 20 cm
D. 30 cm.

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166.  Traffic engineering only includes
A. planning of regulatory measures
B. design and application of control devices
C. analysis of traffic characteristics
D. all the above.

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167.  For clear distinct vision, images of obstructions should fall on the retina with a cone of
A. 2?
B. 3?
C. 4?
D. 5?

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168.  In complex situations, total time required for a driver to form a judgement and to act, may be taken as
A. 1.0 sec
B. 1.5 sec
C. 2.0 sec
D. 3.0 sec.

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