a) Nagpur road plan formulae take into account the towns with very large population.
b) Nagpur road plan has a target road length of 32 km per 100 square km.
c) Second 20-year plan has provided 1600 km of expressways out of the proposed National highway.
d) Second 20-year plan allowed deduc-tion of length of railway track in the area while calculating the length of roads.
Ans: c