Abstract
With the rapid development of urban economy and the acceleration of urbanization, the demand for urban traffic is increasing rapidly. The single traffic-oriented planning does not take into account the requirements of traffic development on resources and the impact on the environment. The traffic construction of most cities can not fully meet the standard of ecotype. In this paper, the vehicle distribution route optimization problem under multiresource constraints such as vehicle energy capacity and vehicle loading capacity is studied, and the static and dynamic models of distribution route optimization under multiresource constraints are established. In the static distribution route optimization model, the distribution route optimization problem with subloops is solved by modifying the network structure and adding virtual resource points. In the dynamic model, the spatiotemporal network model is used to avoid the generation of subloops, and the description of the vehicle distribution route planning problem is more intuitive and accurate. The model enriches the vehicle distribution route selection scheme at the cost of expanding the model scale. And it can solve the time when the vehicle arrives and leaves the customer point. This paper provides a good countermeasure for solving the environmental and social problems in the transportation system under the condition of resource constraints.
Highlights
In the economics of resources and environment, resources are generally defined as its narrow side, that is, natural resources, which includes exhaustible and nonexhaustive resources. e former means that the stock of the resource will gradually decrease with the passage of time [1]
Nonrenewable resources are resources that do not have the ability of self-circular growth and are gradually consumed with the use of human beings. ey can be divided into recyclable nonrenewable resources and nonrecyclable nonrenewable resources
Resource constraint refers to the shortage and price increase of natural resources caused by the decrease in quantity, quality, and difficulty of development and utilization of natural resources, which restricts economic growth, and known as the quantity control constraint of natural resources
Summary
In the economics of resources and environment, resources are generally defined as its narrow side, that is, natural resources, which includes exhaustible and nonexhaustive resources. e former means that the stock of the resource will gradually decrease with the passage of time [1]. E environmental constraint referred to in this paper refers to environmental regulation [7,8,9,10] Because of these resources and constraints, with the rapid development of urban economy and the acceleration of urbanization, the demand for urban traffic increases sharply. According to the four aspects of the land use model, traffic structure, traffic infrastructure, and ecological status, the evaluation index system including 14 indicators is selected to evaluate the traffic planning scheme [21, 22]. The goal of ecological traffic planning which meets both traffic demand and ecological constraints is put forward, and from the point of view of land use layout, the optimization model of land use layout structure based on the minimum cross-regional travel distance is established [23]. It can solve the time when the vehicle arrives and leaves the customer point. e commercial optimization software is used as a tool to verify the above two models, and numerical experiments are carried out
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