Bus routes within Tokyo are impossibly complicated. The Tokyo Municipal Government operates some of the lines; private companies run the rest. There's no telephone number even native Japanese can call for help. And buses all have tiny seats and low ceilings. Unless you are a true Tokyo veteran, forget about taking buses. JR buses can be a viable way to get to and from other parts of the country from Tokyo but these services are only geared toward locals who are fluent in the language and culture.
Some buses have a set cost, anywhere from ¥100 to ¥200, depending on the route and municipality, in which case you board at the front of the bus and pay as you get on. On other buses cost is determined by the distance you travel. You take a ticket when you board at the rear door of the bus; it bears the number of the stop at which you boarded. Your fare depends on your destination and is indicated by a board at the front of the bus.
JR Kanto Bus (03/3844-1950). Nishinihon JR Bus (06/6466-9990).
