The design speed on a road is 60 kmph. Assuming the driver reaction time of 2.5 seconds and coefficient of friction of pavement surface as 0.35, the required stopping distance for two-way traffic on a single lane road is
A
82.1 m
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B
102.4 m
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C
164.2 m
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D
186.4 m
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Solution
The correct option is C 164.2 m Stopping Distance =0.278Vt+V2254f
=0.278×60×2.5+(60)2254×0.35=82.1m
But the traffic is two way, therefore the stopping distance =2×82.1=164.2m