As a solution to resolve the problems of the city such as traffic jam, a shift in the usage from privately-owned cars to public transport are pointed out, however the present situation is such that due to the lack of high convenience in using privately-owned cars or the improvement of the overall public transport in terms of convenience has caused few success cases. In light to this problem, with the purpose of convenience improvement of the public transport as a whole, an integrated information system of the railroad and buses was developed in order to provide the users with such information. An efficacy evaluation of the smartphone application with integrated information system was developed and tested in Kashiwa City of Chiba Prefecture from October 2013 to December 2013. The assessment and efficacy evaluation of the user and usage trends of the society during the testing period were obtained and reported.