Question: A 3 % upgrade meets a 4 % downgrade on a road with a design speed of 5 0 m p h . What is

A 3% upgrade meets a 4% downgrade on a road with a design speed of 50mph. What is most nearly the minimum length of vertical curve required based on the AASHTO recommendations for stopping sight distance?
a.425ft
b.540ft
c.590ft
d.,670ft
A 3 % upgrade meets a 4 % downgrade on a road

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