Tokyo Toden  The or simply Toden, is the tram network of Tokyo, Japan. Of all its former routes, only one, the Tokyo Sakura Tram, remains in service. The Tokyo Metropolitan Bureau of Transportation operates the Toden. The formal legal name is "Tokyo-to Densha." Its nickname, "Toden," distinguished it from the "Kokuden" (electrified lines of the Japanese National Railways). At its peak, the Toden system boasted 41 routes with 213 kilometers of track. However, the increase in reliance on automobile traffic resulted in reductions in ridership, and from 1967 to 1972, 181 km of track were abandoned as the Bureau changed its emphasis to bus and subway modes of transportation. This is the list of former lines, listed according to their official names. Correspnding routes are those of 1962. The first section of the lines opened in the listed opening years, while the last section of the lines closed in the listed closing years. They were the only lines with a gauge of . The rest of the network had a gauge of . As of 1962, there were 41 routes in operation; the largest number in Japanese history.