Avadi (“ஆவடி”) is a suburb of chennai and a municipality in Thiruvallur district in the state of Tamil Nadu, India. Avadi is an acronym for “Armoured Vehicles and Ammunition Depot of India”. Situated about 23 km north west of Chennai, it is surrounded by major defence establishments. The neighbourhood is served by Avadi railway station of the Chennai Suburban Railway.
The major military establishments having divisions in Avadi are the Indian Air Force, Indian Army, Heavy Vehicles Factory (HVF), EFA-Engine Factory,Avadi, Combat Vehicles Research and Development Establishment (CVRDE), Central Reserve Police Force (CRPF), Indian Navy, Central Vehicle Depot (CVD), The Ordnance Depot [OD], Unfit Vehicles park [UVP] and the Ordnance Clothing Factory (OCF).
The Indian Air Force has a Mechanical Transport Training Institute Technical (MTTI) here for training its personnel on driving and repairing vehicles and also a base repair depot for repair and maintenance of its various equipment. CVRDE undertakes major research on battle tanks and other combat vehicles. MBT Arjun, armoured ambulance, Combat Improved Ajeya and Nag anti tank missile are some of the recent products from CVRDE. The Heavy Vehicles Factory produces an indigenous version of the T-72 tank known as Ajeya. HVF also produces the main battle tank Arjun. The production of T-90S Bhishma tanks started in 2006–2007.
The Tamil Nadu Police(TSP) also has a division in Avadi, the TN 2nd & 5th BN. Many of the police personnel are trained here.There are also more than 500 police quarters here.
There was a vintage World War-II airfield at Red Hills, Sholavaram. This was approachable from the junction close to the CRPF Camp, Avadi, immediately after the Military Hospital. Earlier, it also had a rail link from Avadi passing through Pattabhiram secondary station, PTMS and PTMS E-Depot. Presently this rail line extension terminates at PTMS. Sholavaram was famous for motor sport activities until 1988. Motor racing was discontinued here when the new race course began operations at Irungattukottai, near Sriperumbudur. Sholavaram was used in the infant stages of Indian motor racing by the Madras Motor Sports Club. During its heyday, the Maharaj Kumar of Gondal, Karivardhan, Vijay Mallya and others used to race here.
Karumari Amman temple, Chinna Amman temple, Nagavalli Amman,Vasupujiya Jain Temple and Peruman temple are very famous temples in Avadi. In addition to this many old generation temples are also present in and around Avadi.
Thirumullaivoyal, a locality near Avadi is famous for Masilamaniswara Temple, Thirumullaivoyal an ancient temple of Lord Shiva.
Avadi railway station is one of the terminal station of the Chennai Suburban Railway Network. There are frequent Suburban trains from Avadi to Chennai Central, Chennai Beach, Arakkonam, Thiruvallur and Tiruthani. Few express trains stop at Avadi. Erode-Chennai Yercaud express −03.25AM; Alleppey-Chennai express-05.50AM; Trivandrum-Chennai mail-06.05AM; Tirupathy-Chennai Garudathiri exp-10.15.
Avadi bus terminus is located very near to the Avadi Railway station on the MTH road(2 Min’s by walk). Frequent buses plying from Avadi to various destinations like Tambaram, Broadway, Thiruvanmiyur, Anna Square, Vivekanandar illam, Mandaveli, Poonamallee, CMBT, Thiruvallur, Periyapalayam, Arani and 1 SETC service to Rajapalayam via Madurai. Even many buses pass through this terminus.