Question: The grade into an equal tangent vertical curve is - 4 % and the grade out of the curve is 5 % . The PVC

The grade into an equal tangent vertical curve is -4% and the grade out of the curve is 5%. The PVC is located at station 4034+20(Elevation 123.06ft.). At station 4040+20 there is an overpass located at elevation 134.06ft. If the curve is designed to have a clearance of 15ft. under the overpass; what is the highest design speed that can be used for this curve based on the sight distance criterion?
10pts
The grade into an equal tangent vertical curve is

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