Which of the following statements is true? Select one: a. Sag vertical curve des

Question

Which of the following statements is true? Select one: a. Sag vertical curve design differs from crest vertical design only from a safety assessment perspective whilst appearance criteria are identical. b. The safety assessment for sag curves are based on night time conditions while crest curves focus of visibility over the peak of the curve c. The safety assessment for crest curves are based on night time conditions while sag curves focus of visibility over the peak of the curve. d. Crest curves and sag curves are both designed in identical fashion considering the same factors (height values and sight distance values); the only difference is defining the high and low points. e. If a negative K value is obtained during the vertical curve design process, you must redo the grading of the alignment.

Explanation / Answer

b. The safety assessment for sag curves are based on night time conditions while crest curves focus of visibility over the peak of the curve

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