Highway Engineering
Which of the following is considered to be the highest quality construction in the group of black top pavements?

Bituminous concrete
Mastic asphalt
Sheet asphalt
Bituminous carpet

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Highway Engineering
A traffic rotary is justified where

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

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Highway Engineering
For a constant value of coefficient of lateral friction, the value of required super-elevation increases with

decrease in both speed and radius of curve
increase in both speed and radius of curve
decrease in speed and with increase in radius of curve
increase in speed and with decrease in radius of curve

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