Delhi airport, two years back, has put to use two Taxibot with the aim to be a “net zero-emission” by 2030. Taxibot is a semi-robotic towbarless aircraft tractor that tows planes between the terminal gates and runways. Taxibot has helped reduce carbon emissions on the airport by completing 1000 movements to save 532 tonnes of carbon and 214,000L of ATF. At present, three airlines are using these bots. Authorities aim to add 15 Taxibot in four years.