i) To collect the data about type and volume of traffic at present and to estimate the same that the road is expected to carry in near future. ii) To determine the existing facilities such as traffic regulation and control intersections etc provided on roads so as to decide the priority for improvement and expansion of any particular road and to allot the funds accordingly. iii) To decide the pavement thickness of the road. iv) To decide the geometrical design of the road. v) To decide the drainage system, bridges, culverts etc. vi) To redesign the road width, curves, traffic signals, intersections from the data collected after traffic survey relating to accidents. vii) To estimate the amount of road taxes that can be levied.