Highway Engineering
If the average center to center spacing of vehicles is 20 meters, then the basic capacity of a traffic lane at a speed of 50 kmph is

2000 vehicles per hour
2500 vehicles per hour
2500 vehicles per day
1000 vehicles per hour

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

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