National Highway 44 (India)
National Highway 44 (NH 44) is a major north–south National Highway in India and is the longest in the country. It passes through the Union Territory of Jammu and Kashmir, in addition to the states of Punjab, Haryana, Delhi, Uttar Pradesh, Rajasthan, Madhya Pradesh, Maharashtra, Telangana, Andhra Pradesh, Karnataka, and Tamil Nadu. It came into being by merging seven national highways, in full or part, starting with the Jammu-Srinagar National Highway (former NH 1A) from Srinagar in Jammu and Kashmir, former NH 1 in Punjab and Haryana ending at Delhi, part of former NH 2 starting from Delhi and ending at Agra, former NH 3 (popularly known as Agra-Bombay National Highway) from Agra to Gwalior, former NH 75 and former NH 26 to Jhansi, and former NH 7 via Lakhnadon, Seoni, Nagpur, Hinganghat, Adilabad, Nirmal, Hyderabad, Kurnool, Anantapur,Chikkaballapur, Bangalore, Hosur, Krishnagiri, Dharmapuri, Salem, Namakkal, Karur, Dindigul, Madurai,   Virudhunagar and Tirunelveli terminating at Kanyakumari. Delhi (Mubarka Chowk) to Panipat 70 km section is being upgraded also known as Delhi-Panipat Expressway, at the cost of ₹2,178.82 crores, to a elevated tolled expressway with 8 main lane and 4 (2+2) service lanes, which was completed in July 2023. The NH-44 road between Salem and Thoppur in Tamil Nadu is very much prone to fatal accidents due to the poor road design in the hilly slopes. Route 
The highway starts from Srinagar. NH 44 covers the North-South Corridor of NHDP and it is officially listed as running over  from Srinagar to Kanyakumari. It is the longest national highway in India. Bengaluru–Hosur Road

Bengaluru–Hosur Road  of this highway connects Bengaluru, the capital of the state of Karnataka, and the city of Hosur, in the Krishnagiri district on the border of Karnataka and Tamil Nadu. It is a four- to six-lane highway which also has service lanes on either sides at the busier parts. Apart from being a part of the National Highway, the road is also significant because it consist of many industrial and IT business houses. The IT industrial park Electronic City is also located alongside Hosur Road. The National Highways Authority of India has constructed a  elevated highway between Bommanahalli and Electronic City. This toll road has made travel to Electronic City a lot faster. The Bruhat Bengaluru Mahanagara Palike and the Bengaluru Development Authority have planned a series of flyovers and underpasses to make this arterial road signal-free. Major intersections
 
   in Gwalior
   in Sagar
   in Narasinghpur
   in Lakhnadon 
   in Seoni
   in Ramtek
   in Nagpur

Tunnels
 T5 Tunnel: On 16 March 2023, the National Highways Authority of India Thursday opened for traffic T5 tunnel, a  870-metre tunnel that bypasses landslide-prone stretch of the mountainous road between Panthial and Magerkote, on the Jammu-Srinagar National Highway in Ramban district. Primary destinations
- Srinagar - Jammu - Kathua (Jammu and Kashmir) - Pathankot - Jalandhar - Ludhiana (Punjab) - Ambala - Kurukshetra - Panipat - Sonipat (Haryana) - Delhi (Delhi) - Faridabad - Palwal (Haryana) - Mathura - Agra (UP) - Dholpur (Rajasthan)

- Morena (MP)  - Gwalior (MP) - Jhansi - Lalitpur (UP) - Sagar - Narsinghpur - Lakhnadon - Seoni (MP) - Nagpur - Hinganghat (Maharashtra) - Adilabad - Nirmal - Nizamabad- Kamareddy - Hyderabad - Jadcherla (Telangana) - Kurnool -  Dhone - Anantapur (AP) - Chikkaballapur - Bangalore (Karnataka) - Hosur - Krishnagiri - Dharmapuri - Salem - Karur - Dindigul - Madurai - Tirunelveli - Kanyakumari (Tamil Nadu)

