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

increases
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
decreases

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Highway Engineering
The entrance and exit curves of a rotary have

equal radii but pavement width is more at entrance than at exit curve
equal pavement widths but radius is more at entrance curve than at exit curve
equal radii and equal widths of pavement
different radii and different widths of pavement

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