211. Thickness of broken centre line markings for a four lane road, is generally kept
A. 10 cm
B. 12 cm
C. 15 cm
D. 18 cm

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212. Thickness of broken line markings on multi-lane road for lanes is generally kept
A. 10 cm
B. 12 cm
C. 15 cm
D. 18 cm

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213. Passing zones are generally not provided on
A. summit curves
B. horizontal curves
C. two lane highways
D. all the above.

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214.  Round-abouts are not suitable if number of vehicles exceed
A.3000
B.4000
C.5000
D.6000

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215. Width of a rotary round should be equal to
A. twice the width of narrowest radial road
B. width of the widest road
C. width of the widest road plus the width of one lane
D. width of the widest road plus 2 metres.

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216. The weaving length of a roadway is the distance
A. between the channelising islands
B. equal to half circumference
C. equal to total width of adjoining radial roads
D. equal to diameter of rotary.

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217.  For the movement of vehicles at an intersection of two roads, without any interference, the type of grade separator generally preferred to, is
A. delta
B. trumpet
C. diamond interchange
D. clover leaf.

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