Delhi Airport has released a comprehensive list of guidelines and SOPs (standard operating procedures) for passengers and staff in anticipation of flight operations being restarted after the coronavirus lockdown is lifted. Flight operations will initially only be allowed in Terminal 3, an airport official told news agency PTI on Sunday.The measures, meant to prevent further spread of the COVID-19 virus, include marked areas outside and inside terminals and airport buses to ensure social distancing, widespread provision of hand sanitisers, thermal screening of all passengers and thorough disinfection of baggage carts/trolleys.