Highway Engineering
The provision of traffic signals at intersections

reduces rear end collisions but may increase right angled collisions
reduces right angled and rear end collisions
reduces right angled collisions but may increase rear end collisions
increases right angled and rear end collisions

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Highway Engineering
The entrance and exit curves of a rotary have

equal radii and equal widths of pavement
different radii and different 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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Highway Engineering
For a constant value of coefficient of lateral friction, the value of required super-elevation increases with

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

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