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Highway Engineering - Engineering

Q1:

If brakes of vehicles are effective, the vehicle-running at 30 km/hour comes to a stop in

A 10 metres

B 12 metres

C 15 metres

D 18 metres

ANS:B - 12 metres

S = (0.7* Vb) + 6.
Where Vb = 30*5/18.
=8.33m/s.

Therefore,
S = (0.7*8.33)+6.
=11.83~12m.