Road network in Tamil Nadu June 2018, Tamil Nadu's road network has a total road length of . Tamil Nadu has about of highways which is designated as "National Highways" and "State Highways" on the basis of traffic intensity and connectivity. The various types of roads and their lengths are given below: Road stretches which have heavy traffic intensity of more than 30,000 Passenger Car Units (PCUs) connecting different state capitals, major ports, large industrial areas and tourist centers are designated National Highway by Government of India. In Tamil Nadu, "National Highways Wing" of Highways & Minor Ports Department was established in the year 1971
A590 road "the longest cul-de-sac in the world". From east to west, the A590 originally terminated at the A6 road near Levens. Its route followed a number of country roads via a series of Turn Off To Stay On (TOTSO)'s, passing through a number of villages including Lindale, High and Low Newton, Newby Bridge and Greenodd into the larger town of Ulverston. This road formed a large part of the southern boundary of the Lake District National Park upon its formation in 1951. This stretch of road has now undergone a series of improvements and route alignments. In the mid-1970s, the A591