Highway Engineering
The sequence of four stages of survey in a highway alignment is

preliminary survey, map study, reconnaissance and detailed survey
map study, reconnaissance, preliminary survey and detailed survey
reconnaissance, map study, preliminary survey and detailed survey
map study, preliminary survey, reconnaissance and detailed survey

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Highway Engineering
The effect of grade on safe overtaking sight distance is

to increase it on both descending and ascending grades
to decrease it on both descending and ascending grades
to decrease it on descending grades and to increase it on ascending grades
to increase it on descending grades and to decrease it on ascending grades

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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

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

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