Suburban rail operations and subway lines are also very integrated. Frequent and high-capacity suburban trains from the suburbs commonly continue directly into the subway network to serve central Tokyo, often emerging on the other side of the city to serve another company's surface suburban lines, behaving like an S-bahn network.
Suburban rail systems and subway lines in Tokyo are closely integrated, with frequent, high-capacity trains from the suburbs frequently connecting directly into the subway system to serve central Tokyo before branching out to other companies' surface suburban lines, resembling an S-Bahn network.