Question: A simple circular curve is being designed on a 4 - lane road for a rural highway with a design speed of 4 0 mi

A simple circular curve is being designed on a 4-lane road for a rural highway with a design
speed of 40 mi/h. The road has a 12-foot-wide lane. Because of a sight distance constraint
on the inside of the curve, the middle ordinate must be 40.00 ft. The station of the PI =
45+30.00. The bearings of the incoming (back) and outgoing (forward) tangents are N
375655 E and N 25418 W respectively. Normal crown is 0.02. Maximum e=8%

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