In Hiroshima city，the traffic environment is bad because the lot of the city is surrounded by the mountains and a delta. Therefore there are a few fiat parts in Hiroshima city. The central part of Hiroshima city is overcrowded. The mountains are been developed，new residential areas increase. Over 300000 commuters go to center from these arrears every day. This holds true of Kobe area in the north of Hiroshima-shi. There are many new houses，and a lot of trucks usually pass along the national road R54. For this reasons，Kobe area is chronic is congested. Also it is inconvenient for，and a level of bus service is low. Consequently，people are there are unwilling to use a bus because it is convenient to go by car.