Highway Engineering
The attainment of super elevation by rotation of pavement about the inner edge of the pavement

results in balancing the earthwork
avoids the drainage problem in flat terrain
does not change the vertical alignment of road
is preferable in steep terrain

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Highway Engineering
Length of a vehicle affects

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
width of traffic lanes

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