An ascending gradient of 1 in 100 meets a descending gradient of 1 in 50. The length of the summit curve required to provide overtaking sight distance of 500 m will be
- A. 938 m
- B. 781 m
- C. 470 m
- D. 170 m
The correct answer is option B. 781 m. Can you explain this answer in the comments?
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