Highway Engineering
When the bituminous surfacing is done on already existing black top road or over existing cement concrete road, the type of treatment given is

Tack coat
Spray of emulsion
Seal coat
Prime coat

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Highway Engineering
The direct interchange ramp involves

diverging to the right side and merging from left
diverging to the left side and merging from left
diverging to the left side and merging from right
diverging to the right side and merging from right

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Highway Engineering
With increase in speed of the traffic stream, the maximum capacity of the lane

decreases
first increases and then decreases after reaching a maximum value at optimum speed
increases
first decreases and then increases after reaching a minimum value at optimum speed

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