On a single lane road with two way traffic, the minimum stopping sight distance is equal to
A. stopping distance
B. two times the stopping distance
C. half the stopping distance
D. three times the stopping distance
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Flexible pavement distribute the wheel load
A. directly to subgrade
B. through structural action
C. through a set of layers to the subgrade
D. none of the above
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For highway geometric design purposes the speed used is
A. 15th percentile
B. 50th percentile
C. 85th percentile
D. 98th percentile
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Select the incorrect statement.
A. Stop or red time of a signal is the sum of go and clearance intervals for the cross flow.
B. Go or green time of a signal is the sum of stop and clearance intervals for the cross flow.
C. Clearance time is generally 3 to 5 seconds.
D. The cycle length is normally 40 to 60 seconds for two phase signals.
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The diagram which shows all important physical conditions of an accident location like roadway limits, bridges, trees and all details of roadway conditions is known as
A. pie chart
B. spot maps
C. condition diagram
D. collision diagram
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Coefficient of friction is less when the pavement surface is
A. rough
B. dry
C. smooth and dry
D. smooth and wet
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If the stopping distance is 60 meters, then the minimum stopping sight distance for two lane, two way traffic is
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Group index method of design of flexible pavement is
A. A theoretical method
B. An empirical method based on physical properties of sub-grade soil
C. An empirical method based on strength characteristics of sub-grade soil
D. A semi empirical method
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The camber of road should be approximately equal to
A. longitudinal gradient
B. two times the longitudinal gradient
C. three times the longitudinal gradient
D. half the longitudinal gradient
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Which of the following shapes is preferred in a valley curve ?
A. simple parabola
B. cubic parabola
C. spiral
D. lemniscate
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Which of the following is indicated by a warning sign ?
A. level crossing
B. no parking
C. end of speed limit
D. overtaking prohibited
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