Problem 1. A 2300-ft equal-tangent crest vertical curve is currently designed for 60 mph. This curve connects an initial grade of +3.5% and a negative, final grade. (1) What is the min. K-value under the 60 mph design speed? 11.0 (2) Use that min. K-value as your design value, determine A and G₂. (3) Where is the highest point along the curve located?

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Curve setting

A curve is a turn that is provided horizontally or vertically in the design of highways, railways, and runways. A curve connects two straight lines that are separated by the deflection angle. It helps to change the direction and alignment of the highways, railway tracks, and runways. Therefore, the gradual change in their alignment is made by using a curve to provide comfort to the passengers and this also provides an easy turn to change the direction of the moving vehicle.