Abstract: The unreasonable planning and design of tourism routes may increase traffic load, waste traffic and tourism resources, and reduce travel efficiency. The establishment of a scientific tourism route planning model can provide a theoretical basis for the design of tourism route, and has a certain reference significance for the development of tourism industry. This paper proposes a beneficial model of the shortest travel route of the city by using the theory and method of planning design and decision management of transportation specialty, and combining the knowledge of graph theory in operational research. Firstly, a slice of data regarding the most expected tourist attractions and consumption tendency of tourists is obtained through sampling survey and interview to construct graphic network. Secondly, the travel time is analyzed to calculate the best travel route and days of the city, then the shortest travel route and the lowest expectancy of tourists are taken as constraints to establish this model. Taking Xi'an as an example, the model is applied to determine a bus special line for three-day tour of Xi'an. The results indicates that the tourism routes calculated by this model are in line with the reality of tourism and have strong feasibility and practical significance for the planning of Intelligent Tourism routes. Key words: tourism special line; transportation specialty; operations research; graph theory

CICTP