Why is the metro becoming so popular in the large cities of the world?

The metro is becoming increasingly popular in large cities due to its efficiency in reducing traffic congestion and providing a faster means of transportation. As urban populations grow, metros offer a reliable alternative to cars, helping to minimize environmental impact and lower carbon emissions. Additionally, the convenience and accessibility of metro systems make them an attractive option for daily commuters, contributing to their rising popularity. Enhanced infrastructure and investment in public transit also play a key role in promoting metro usage.