To enhance transport efficiency and service quality, a lot of countries are actively promoting Intelligent Transportation System (ITS) on public transportation today. The transport efficiency and service quality that people concern mostly are less waiting time and the reliability of the system. Dynamic bus information system is one kind of more efficiency transportation service of intelligent transportation system. Therefore the valuation of dynamic bus information system on public transportation becomes an important issue. This study builds a theoretical framework to create a survey and perform a practical investigation among users of the dynamic bus information system of Taiwan. It is an interesting finding that the dissatisfied problem tends to be a not familiar phenomenon for user.