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Q: The Curve provided at the change of gradient is called :
  • A. Horizontal curve
  • B. Transition curve
  • C. Reverse curve
  • D. Vertical curve
Correct Answer: Option D - The curve provided at the change of gradient is called vertical curve. It is of two type– (i) Summit curve (b) Valley curve
D. The curve provided at the change of gradient is called vertical curve. It is of two type– (i) Summit curve (b) Valley curve

Explanations:

The curve provided at the change of gradient is called vertical curve. It is of two type– (i) Summit curve (b) Valley curve