Advance bookings inidicate tExpo 2010 could see one of the largest visitor turnouts in history.
Zhou Huai, head of the Expo traffic management department, said that traffic outside and inside the site will be "safe, convenient and in order." He added visitor numbers inside the Expo site will be subject to a three-level alert system.
Authorities will beef up supervision if the volume reaches 400,000. They will limit visitors after more than 500,000 visitors are on site.
As soon as the volume reaches 600,000, the organizer will call off transport services to the site, which means the closure of 42 special bus routes for the Expo as well as Metro stations near the site.
It’s estimated that 70 million visitors will come to the 184-day Expo, with a daily turnout of about 400,000. Up to 90% of the daily visitors are expected to reach the Expo site on public transport.
Metro Line 13, five bus routes and five ferry tours are the main body of public transport inside the Expo site.
Shanghai Daily said that most of the transport will be free except for two tour bus routes and three sightseeing ferry routes which take visitors out of the site at night.