Japan Railway Journal (2015) : 5x6

Tokyo Metro operates 9 subway lines with a network stretching a total of 195km. Connecting to a number of main stations in Tokyo on both private and JR lines, Tokyo Metro carries 7.4 million passengers and makes 5,700 trips per day. To handle the demands of such a high-density line, operating schedules are broken down into 5-second increments. We go behind the scenes to find out how the drivers are trained to operate such a precise schedule. Also, see how Japan's very first subway line is being transformed using the latest technology.