Traffic at the Cross-Harbour Tunnel will be stopped for a few minutes next Wednesday when the tunnel's current 30-year franchise expires and a new operator takes over. New tolls for private cars and motorcycles will also take effect after the transition at one minute past midnight on September 1, the Transport Department said yesterday. A spokesman said: 'Both Hong Kong Island- and Kowloon-bound traffic will be stopped briefly for a few minutes when the transition takes place.' The stoppage is required to allow the change over of management between the outgoing and incoming operators. It is also needed for the termination of the toll collection account of the outgoing franchisee and the activation of a computer system to collect tolls by the new operator, the department said. The Hong Kong Tunnels and Highways Management Company, which takes over the running of the tunnel, has retained the existing management team and operations staff. Tolls for private cars and motorcycles will increase from $10 to $20 and $4 to $8 respectively.