Question: A 1200-ft equal tangent crest vertical curve is currently designed for 50 mph. A civil engineering student contends that 60 mph is safe in

A 1200-ft equal tangent crest vertical curve is currently designed for 50 mph. A civil engineering student contends that 60 mph is safe in a van because of the higher driver's eye height. If all other design inputs are standard, what must the driver's eye height (in the van) be for the student's claim to be valid?

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