Civil Engineering - GATE Exam Questions - Discussion


The reaction time for calculation of stopping distance may be assumed as

[A]. 5 secs
[B]. 2.5 secs
[C]. 0.5 secs
[D]. 10.0 secs

Answer: Option B


No answer description available for this question.

Dilbar Singh said: (Nov 30, 2016)  
Research has shown that 90% of the driving population can react in 2.5 seconds or less. The brake reaction time normally used in design, therefore, is 2.5 seconds.

Sheela said: (Dec 18, 2017)  
Thanks @ Dilbar Singh.

Rakesh said: (Feb 10, 2018)  
Thank you for explaining @Dilbar.

Ajay Desai said: (Jul 3, 2019)  
For SSD reaction time consider =2.5 sec.

And for OSD generally, consider Reaction time =2 sec.

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