Delhi Metro has completed 22 years of its passenger operations, according to a statement issued on Wednesday. It was on December 24, 2002 that the first Delhi Metro train, TS-01, was flagged off by the then Prime Minister, Atal Bihari Vajpayee, "introducing a new era of modern public transport" in Delhi NCR, the statement said. The TS-01 train, which started DMRC's journey, has carved a legacy of its own in bringing modern public transport to Delhi, it said. Commissioned in 2002, TS-01 began as a four-coach train but has been upgraded over the years to meet growing passenger demand, and expanded to six coaches in 2014 and further to eight coaches in 2023, it stated. Over its 22-year journey, TS-01 has been a symbol of reliability and efficiency, covering approximately 27 lakh kilometers, safely transporting over 5.4 crore passengers, and executing an impressive 23 lakh door operations, it said. Manufactured by the MRM Consortium in South Korea, the train was transported to Kolkata