Highway Engineering
Group index method of design of flexible pavement is

An empirical method based on strength characteristics of sub-grade soil
An empirical method based on physical properties of sub-grade soil
A semi empirical method
A theoretical method

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Highway Engineering
Length of a vehicle affects

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

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