‘Unlock 4 Delhi Metro PTI (3)’

New Delhi: Metro trains parked at DMRC depot at Khyber Pass, during Unlock 3.0, in New Delhi, Tuesday, Aug. 25, 2020. Metro train services may be allowed in the Unlock 4 phase beginning September 1. (PTI Photo/ Shahbaz Khan)(PTI25-08-2020 000139B)

New Delhi: Metro trains parked at DMRC depot at Khyber Pass, during Unlock 3.0, in New Delhi, Tuesday, Aug. 25, 2020. Metro train services may be allowed in the Unlock 4 phase beginning September 1. (PTI Photo/ Shahbaz Khan)(PTI25-08-2020 000139B)