Blue Sea Ferry operates between Qingdao and Gunsan. Qingdao port also includes a number of large adjacent ports including Dongjiakou. Aviation Qingdao Jiaodong International Airport, located away from the city center, is served by 13 domestic and international airlines that operate 94 routes, 12 of which are international and regional. The airport opened on August 12, 2021, as a replacement for Qingdao Liuting International Airport. Intercity rail Qingdao's railway development picked up during the late 1990s. It is at the start of the Jiaoji Railway. Qingdao's city proper has some major railway stations, including Qingdao railway station, Cangkou railway station, Dagang railway station and Qingdao North railway station. Sifang railway station is now closed to passengers. D and G series high-speed trains travel on the Jiaoji High Speed Railway and reach speeds of on the Jinan-Qingdao Section. Services go to Beijing, Shanghai, Hefei, Jinan and Tianjin. The fastest train between Qingdao and Beijing is G206 / G205, which takes 2 hours and 58 minutes. Domestic rail lines connect Qingdao with many cities in China, including Beijing, Lanzhou, Chengdu, Xi'an, Zhengzhou, Jinan and Jining. Public transport Qingdao's public traffic owns 5283 large and medium-sized buses, CNG buses .There are also 136 trolleybuses . All of the buses and trolleybuses can be accessed using the Qingdao Public Traffic IC Card (), which uses radio frequencies so the card does not have to physically touch the scanner. After that, all public transportation companies use Qingdaotong Card, the last company that started to use this card is the Zhenqing bus company located in The West Coast New Area of Qingdao (original Huangdao Distinct) in 2019. Non air-conditioned buses cost 1 yuan (excluding the tunnel bus), The volume of road passenger transport approaches 737 million per year. The Public Transport Brand of 'Ri-Xin Bus ()' is also known in China. There are several taxi companies in Qingdao including Yiqing Company, Zhongqing Company, Jiaoyun Company, and, Huaqing Company. Metro After getting the approval from the State Council, the government announced on 18 August 2009 that Qingdao is ready to spend more than 29 billion yuan ($4.2 billion) before 2016 on its subway construction. Construction of of subway line 3 was completed before 2016 with a total investment of 29.2 billion yuan ($4.3 billion). Metro Line 3 is the first line in function and opened on 16 December 2015. In the long term, the city plans to