Civil Engineering - GATE Exam Questions - Discussion

Discussion Forum : GATE Exam Questions - Section 1 (Q.No. 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
No answer description is available. Let's discuss.
34 comments Page 1 of 4.

Naveen said:   8 months 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.

Tian said:   3 years ago
Yes, right. Agree @Sneha.

Muluneh said:   3 years ago
Answer is B because the height of the obstacle have constant height for every one who drive.

Sneha Mathai said:   3 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.

Blackie said:   3 years ago
Yes, D is correct.

Gurjant Singh said:   4 years ago
Yes, Agree, Option D is right.

Murtaza said:   4 years ago
Option D should be the right answer.

Ahsen said:   4 years ago
Should it not be option D?

As there are no visual restrictions on sag curve and the only concern remaining is the glare due to vehicle headlight at night time.

Puja said:   5 years ago
Option D is correct.

Aniket said:   5 years ago
I think Option D is the correct answer.

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