An Optimization Model of Bus Network of Jiangsu University Based on Accessibility

With the rapid development of education of our country and the gradual acceleration of urbanization, the construction of large-scale new campus has become an effective model driven by the multiple factors of higher education system reform and university enrollment expansion. With the expanding of the campus space, students need large differences in living space and campus planning space, and that lead to the campus walking distance too far between each function, problems such as traffic flow line is too long, the lack of communication activities. This paper introduces the concept of accessibility, mainly considering the influence of campus bus on student travel in the campus transportation system when students choose two modes of transportation: walking or taking campus bus. Taking the gravity model as the accessibility evaluation model and evaluates the accessibility of the bus network of Jiangsu University. According to the evaluation results, the traffic districts with high traffic demand but low accessibility were found, and the bus line network was optimized to improve the accessibility of each district to meet the traffic demand of the district. Finally, the campus bus network with perfect operation system and equal accessibility to all important nodes is obtained. The new bus network balances the travel demands of different areas on campus, improves the bus operation efficiency of Jiangsu University and reduces the travel time of teachers and students on campus.