With the growth of technology, it becomes more and more convenient to obtain information; however, it is difficult to collect specific information according to users’ needs in a quick way. Taipei City, the biggest city in Taiwan, is a blend of the traditional culture and modern technologies. As the population increases, traffic demands have become one of the public’s main concerns. Taipei City Government provides many kinds of traffic information, such as MRT services, parking lots, etc. But different kinds of information belong to different units so that it’s inconvenient for using. To solve this problem, Taipei City Department of Transportation planned to integrate different traffic information resources on one platform based on WebGIS technology to provide all of traffic information for the public.