Highway Engineering
In case of hill roads, the extra widening is generally provided

equally on inner and outer sides of the curve
one-fourth on inner side and three-fourth on outer side of the curve
fully on the inner side of the curve
fully on the outer side of the curve

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Highway Engineering
Length of a vehicle affects

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

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