Highway Engineering
The shape of the camber, best suited for cement concrete pavements, is

elliptical
combination of straight and parabolic
straight line
parabolic

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Highway Engineering
With increase in speed of the traffic stream, the maximum capacity of the lane

decreases
increases
first decreases and then increases after reaching a minimum value at optimum speed
first increases and then decreases after reaching a maximum value at optimum speed

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Highway Engineering
When the speed of traffic flow becomes zero,then

traffic density attains maximum value whereas traffic volume becomes zero
traffic density and traffic volume both attain maximum value
traffic density becomes zero whereas traffic volume attains maximum value
traffic density and traffic volume both become zero

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