Beijing's metro system will stretch to 561 kilometres by 2020, surpassing London's underground as the longest subway system in the world, so as to help ease worsening traffic congestion, the state media reported on Monday.
Four new subway lines will open to the public this month, which will extend the capital's subway to 527 kms, the longest in the country.
Measures that will make Indian cities more organised and liveable need to be implemented to tackle the menace of pollution.