National Highway 44 is the longest National Highway that is present in India, connecting the two far most cornered states of India. The overall length of National Highway 44 is 4112 kilometres.
The basic cities that are connected by National Highway 27 are Gujarat, Rajasthan, Uttar Pradesh, West Bengal, etc. The overall length of the national highway 27 is 3507 kilometres.
National Highway 48 is the combination of two previously constructed National Highways, which were known as the National Highway 4 and NH 8. The overall length of National Highway 48 is 2807 kilometres.
National Highway 52 is the highway that connects the northern side of India to the southern side of India. The overall length of National Highway 52 is 2317 kilometres.
National Highway 30, which is 2040 kilometres long, has the least number of road connectivity which makes it one of the safest highways of all.