The design speed of a highway is 80 kmph and the radius of the circular curve is 150 m in plain topography. Which one of the following is the minimum length of the transition curve?
- A. 174 m
- B. 85 m
- C. 140 m
- D. 120 m
The correct answer is option C. 140 m. Can you explain this answer in the comments?
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