Qiaozhong Road Tunnel  The Qiaozhong Road Tunnel () is a tunnel in Haikou, Hainan Province, China. It connects Qiaozhong Road with Yusha Road, and is the only tunnel in the city. The tunnel runs north-south, with two lanes in each direction, separated by a full, solid wall. The sides of the tunnel have a separate route which is shared by two-wheeled vehicles and pedestrians. This is separated from the main motor vehicle traffic by a low fence, and is raised to curb height. The tunnel is well-lit, with large cylindrical ventilation fans located on the ceiling. The walls are made of sheets of polished, cut stone.