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
In case of summit curves, the deviation angle will be maximum when

a descending gradient meets with another descending gradient
an ascending gradient meets with a level surface
an ascending gradient meets with another ascending gradient
an ascending gradient meets with a descending gradient

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