Highway Engineering
Which of the following methods is preferred for collecting origin and destination data for a small area like a mass business center or a large intersection ?

road side interview method
return postcard method
home interview method
license plate method

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

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

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