Highway Engineering
In the penetration macadam construction, the bitumen is

Sprayed before the aggregates are spread and compacted
Premixed with aggregates and then spread
None of these
Sprayed after the aggregates are spread and compacted

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

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

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Highway Engineering
A traffic rotary is justified where

space is limited and costly
when traffic volume is more than 5000 vehicles per hour
number of intersecting roads is between 4 and 7
when traffic volume is less than 500 vehicles per hour

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