SHANGHAI: About 110 billion yuan will be spent upgrading the city's public transport system over the next three years, the transport department revealed

Starting this year, old polluting uses will be replaced, transport routes will be extended, digital traffic information systems will be established to make transport routes more efficient and frequent commuters will be able to travel at lower cost.

A plan released by Shanghai municipal government said Shanghai had witnessed tremendous progress building a public transport system since the 1990s.