Highway Engineering
Reaction time of a driver

is same for all speeds
increases with increase in speed
decreases with increase in speed
None of these

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Highway Engineering
If b is the wheel track of a vehicle and h is the height of centre of gravity above road surface, then to avoid overturning and lateral skidding on a horizontal curve, the centrifugal ratio should always be

greater than b/2h and also greater than coefficient of lateral friction
less than b/2h and greater than co-efficient of lateral friction
greater than b/2h and less than co-efficient of lateral friction
less than b/2h and also less than co-efficient of lateral friction

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Highway Engineering
Centre line markings are used

to designate proper lateral placement of vehicles before turning to different directions
in roadways meant for two way traffic
to indicate that overtaking is not permitted
to designate traffic lanes

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