Civil Engineering - GATE Exam Questions - Discussion

Discussion Forum : GATE Exam Questions - Section 1 (Q.No. 4)
4.
On sag (or valley) curves the available sight distance is determined based on :
design speed
height of obstacle
height of driver eye
night-time driving conditions
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
34 comments Page 4 of 4.

Sneha Mathai said:   5 years ago
In a valley or sag curve, the design is based on headlight sight distance only. It is because night time driving is to be taken at almost care in valley curves.
(1)

Muluneh said:   4 years ago
Answer is B because the height of the obstacle have constant height for every one who drive.

Tian said:   4 years ago
Yes, right. Agree @Sneha.
(1)

Naveen said:   2 years ago
Night-time driving condition is the correct answer as the headlight of the vehicle at night is blocked by the vertical curve of the sag curve so that's why a beam angle of 1 degree is provided to get the desired headlight sight distance.


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