The character Tong' in Chinese means smooth connection and free transportation, and Tongzhou is famous for its convenient transportation. Five main roads including Beijing-Tongzhou Expressway and BaTong Lightrail, connect Tongzhou with the downtown of Beijing; the Sixth Ring Road brings Tongzhou and the other suburbs of Beijing together by easy communication; seven highways of Beijing lead out almost to all parts of China, and 3 of them run through Tongzhou, namely Beijing-Shenyang Highway, Beijing-Harbin Highway, and Beijing-Tianjin-Tanggu Highway. Beijing-Chengde and Beijing-Qinghuangdao railways also meet in Tongzhou. Besides, the Seventh Ring Road, Subway Line Five, Beijing-Shanghai High speed Railway, and Beijing-Tianjin commuter train are also under construction.