Highway Engineering
With increase in speed of the traffic stream, the minimum spacing of vehicles

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

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

traffic density and traffic volume both become zero
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

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Highway Engineering
For a constant value of coefficient of lateral friction, the value of required super-elevation increases with

decrease in speed and with increase in radius of curve
increase in both speed and radius of curve
increase in speed and with decrease in radius of curve
decrease in both speed and radius of curve

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Highway Engineering
For the construction of water bound macadam roads, the correct sequence of operations after spreading coarse aggregates is

dry rolling, wet rolling, application of screening and application of filler
dry rolling, application of filler, wet rolling and application of screening
dry rolling, application of screening, wet rolling and application of filler
dry rolling, application of screening, application of filler and wet rolling

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