More Beijing commuters shunning overcrowded trains in favor of city 's buses . City authorities allowed more people to travel when ticket prices were cut . The Beijing Subway system , the country 's oldest , is undergoing an unprecedented expansion ahead of the Summer Olympics . Roads still jammed while subway system is expanded ahead of schedule .
More Beijing commuters shunning overcrowded trains in favor of city 's buses . City authorities allowed more people to travel when ticket prices were cut . Roads still jammed while subway system is expanded ahead of schedule .