Year-wise Total Length of National and State Highways by Width

The dataset contains the year-wise surfaced length of National and State highways at all India level by listing them under four categories on the basis of width- (below standard single lane, standard single lane, standard double lane, standard multi lane) from the year 2001 to 2012. It has been categorized as- (below standard single lane, Less than two lane, Two lane, Four Lane) for the years 2013-2015. Note: Data is up till 31st March 2015.