عنوان مقاله [English]
Geographic information systems (GIS), with the management of transport information sources and the establishment of interconnection with them, facilitate access to traffic and service information. In fact, the goal of creating a GIS for the transportation system is to create a database linking transportation information and GIS. In this paper, we aimed to explain and clarify the practical applications of GIS software in the field of transportation using descriptive-analytical method, and to analyze the locating process of vital facilities and equipment as well as some important uses in East Azarbaijan province relative to the route factor. In this research, the Network Analysis model has been considered as one of the most suitable methods for determining the shortest route for access to facilities or users, and has been implemented in the GIS software to provide access to the use of public parking lots in Tabriz city. The results indicate that GIS is one of the very suitable tools in optimal transportation planning and that Network Analysis model can be employed to determine the shortest and best route in terms of service and availability in transportation planning.