Tseung Kwan O Tunnel (traditional Chinese: 將軍澳隧道; simplified Chinese: 将军澳隧道; Cantonese Yale: jeung1 gwan1 ou3 seui6 dou6) is a 900-metre 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 since opening. Tseung Kwan O Tunnel is currently managed by Greater Lucky (H.K.) Company Limited.