Trains are parked at yard as Delhi Metro services are suspended following the outbreak of COVID-19 pandemic in New Delhi, India on July 18, 2020. (Xinhua/Partha Sarkar)

Trains are parked at yard as Delhi Metro services are suspended following the outbreak of COVID-19 pandemic in New Delhi, India on July 18, 2020. (Xinhua/Partha Sarkar)

Trains are parked at yard as Delhi Metro services are suspended following the outbreak of COVID-19 pandemic in New Delhi, India on July 18, 2020. (Xinhua/Partha Sarkar)