71. When a number of roads are meeting at a point and only one of the roads is important, then the suitable shape of rotary is
72. When the path travelled along the road surface is more than the circumferential movement of the wheels due to rotation, then it results in
73. Scientific planning of transportation system and mass transit facilities in cities should be based on
74. The sequence of four stages of survey in a highway alignment is
75. The suitable surfacing material for a bridge deck slab is
76. The maximum thickness of expansion joint in rigid pavements is
77. The maximum spacing of contraction joints in rigid pavements is
78. The camber for hill roads in case of bituminous surfacing is adopted as
79. Stopping sight distance is always
80. In case of summit curves, the deviation angle will be maximum when
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