Highway Engineering
In case of summit curves, the deviation angle will be maximum when

an ascending gradient meets with a level surface
an ascending gradient meets with another ascending gradient
a descending gradient meets with another descending gradient
an ascending gradient meets with a descending gradient

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Highway Engineering
The entrance and exit curves of a rotary have

different radii and different widths of pavement
equal radii and equal widths of pavement
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

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