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  1. 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 slopping distance for two-way traffic on a single lane road is
    1. 82.1 m
    2. 102.4 m
    3. 164.2 m
    4. 186.4 m
Correct Option: C

SSD = vt +
2g

v = 60 ×
5
= 16.67 m/s
18

SSD = 16.67 × 2.5
16.67²
= 82.134 m
2 × 9.81 × 0.35

For 2 way traffic, SSD' = 2 × SSD = 164.27 m



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