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

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

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Highway Engineering
Length of a vehicle affects

width of shoulders and parking facilities
width of traffic lanes
clearance to be provided under structures such as overbridges, under-bridges etc.
extra width of pavement and minimum turning radius

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Highway Engineering
In soils having same values of plasticity index, if liquid limit is increased, then

Compressibility, permeability and dry strength decrease
Compressibility and permeability decrease and dry strength increases
Compressibility and permeability increase and dry strength decreases
Compressibility, permeability and dry strength increase

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