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A curve of radius 140 m and e= 0.08 is located at a section of an...

A curve of radius 140 m and e= 0.08 is located at a section of an existing rural highway, which restricts the safe speed at this section of the highway to 60% of the design speed. This drastic reduction of safe speed resulted in a high crash rate in this section. To reduce the crash rate, a new alignment is to be designed with a horizontal curve. Determine the minimum radius of this curve if the safe speed should be increased to the design speed of the highway. for the existing curve, and the new curve is to be designed with e= 0.08

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