Tseung Kwan O Tunnel
Tseung Kwan O Tunnel () is a tunnel beneath Ma Yau Tong in Hong Kong. The tunnel was opened on 9 November 1990. Part of Route 7, it links Sau Mau Ping, Kwun Tong, Kowloon and the Tseung Kwan O New Town, Sai Kung District, the New Territories. It was used by 80,385 vehicles daily in 2011. The flat toll fee for the tunnel is HK$3. This tunnel is connected to on the Kowloon side along with its toll plaza, and on the Tseung Kwan O side. The entrance to the tunnel on the Kowloon side is  located to the east of the eastern limits of New Kowloon; whereas part of the toll plaza is located to the west of the eastern limits of New Kowloon. Tseung Kwan O Tunnel is currently managed by Greater Lucky (H.K.) Company Limited.