Highway Engineering
The maximum number of vehicles beyond which the rotary may not function efficiently is

500 vehicles per day
5000 vehicles per hour
500 vehicles per hour
5000 vehicles per day

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

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

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