Assuming the safe stopping sight distance to be 80 m on a flat highway selection and with a setback distance of 10 m, what would be the radius of the negotiable horizontal curve?

Assuming the safe stopping sight distance to be 80 m on a flat highway selection and with a setback distance of 10 m, what would be the radius of the negotiable horizontal curve?

• A. 800 m
• B. 160 m
• C. 80 m
• D. 70 m

 

The correct answer is option C. 80 m. Can you explain this answer in the comments?

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