Abstract
Urban transportation is an important part of urban economic structure, which plays an important role in promoting the orderly development of society, residents' work and life. This paper analyzes the fairness in traffic network design problem, constructs the average network improvement index to measure fairness, and establishes a bi-level programming model for road traffic network design considering traffic fairness. The upper model includes the optimal total travel time and traffic fairness, and the lower model is the traffic flow allocation model. Then, according to the characteristics of the model, a genetic algorithm is designed to solve the model. Finally, a simple example is given to illustrate the effectiveness of the mathematical model and algorithm. The model proposed in this paper can get the final road design scheme satisfying the total travel time and traffic fairness of the road network under certain road network conditions, and can provide decision support for traffic planners.
Highlights
With the rapid development of China's economy and the accelerating process of urbanization, the contradiction between urban traffic supply and demand is increasingly serious
In the limited total amount of resources, how to reasonably allocate road resources has become a major problem faced by traffic policy
Meng and Yang[1] confirmed in continuous network design problems, when the network with minimum total cost, improve the benefit of the selected road traffic capacity will lead to some OD the route of travel costs, they put forward a applicable to transportation network design problem of fairness index, and the fairness into the objective function of the traffic network design
Summary
With the rapid development of China's economy and the accelerating process of urbanization, the contradiction between urban traffic supply and demand is increasingly serious. Meng and Yang[1] confirmed in continuous network design problems, when the network with minimum total cost, improve the benefit of the selected road traffic capacity will lead to some OD the route of travel costs, they put forward a applicable to transportation network design problem of fairness index, and the fairness into the objective function of the traffic network design. This finding has attracted a lot of attention. The study content of the related literature at home and abroad, this paper puts forward the average network improvement indicators as a fair measure of the traffic, builds the mathematical model of continuous network design based on traffic fair, and according to the characteristics of the mathematical model of the improved genetic algorithm is constructed, and exercise the algorithm to a small network of road network design problems
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