"Either Chinese cities take steps forward now with BRT and subways, as well as restraints on car use like congestion pricing, fuel taxes, fuel-economy standards, stronger fuel and emissions standards, or they will very soon run into a combination of congestion, pollution, traffic accidents and fuel waste that is worse than anywhere else," said Lee Schipper, director of research for EMBAR

"Either Chinese cities take steps forward now with BRT and subways, as well as restraints on car use like congestion pricing, fuel taxes, fuel-economy standards, stronger fuel and emissions standards, or they will very soon run into a combination of congestion, pollution, traffic accidents and fuel waste that is worse than anywhere else," said Lee Schipper, director of research for EMBAR

Lee Schipper defines the most serious problems in these megacities as traffic safety, environment and congestion.