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The variable message signs (VMSs) provide an effective method to mitigate urban traffic congestion and balance traffic demand through publishing guidance messages. For evaluating the mitigating effect of VMS on congestion, a general-purpose model utilizing the data mining method is developed. The data includes published messages and a large amount of historical traffic flow collected from VMS publishing...
Urban traffic state is usually measured by vehicle average travel speed. It reflects the resident travel behavior on urban road network, and changes with the actual matching status of traffic demand and supply. In this paper, the traffic supply is estimated by the ideal carrying capacity, and the traffic demand is evaluated by vehicle traffic intensity considering resident travel characteristics....
Optimum maintenance scheduling for traction substations guarantees reliable and efficient operation of electrical railways. Reliability-based optimum scheduling models are respectively proposed through the analysis of the structure and maintenance cost of individual components in traction substations in this study. An individual components-based heuristic algorithm for solving the proposed models...
Attempts are often made to find an optimal coordinated control plan for a group of traffic signals in urban areas, such that platoons of vehicles can proceed through a continuous series of green lights without stopping, thereby reducing considerable unnecessary delay. One main objective of coordinated control is to provide the maximum bandwidth progression by adjusting the offset and phase sequence...
With the statistics of transport system development in 2009, the paper analyzes the impacts of global financial crisis on infrastructural construction. By comparing with several typical countries on their traffic volumes, economic data and also populations, the authors demonstrate the relationships among transportation and social economic indicators, and further advance a definition of the stages...
The data of transportation energy consumption has aroused high attention of the decision-makers. The paper analyzes the differences between the statistical data of transportation energy consumption in China and the international statistical caliber, and thinks that the data of private vehicle, motorcycle, low-speed vehicle (agricultural automobile) are lack in the statistics of China. It develops...
With high consumption of energy, especially petroleum resources, transportation industry has received much concern. In view of this, the paper summarizes the domestic and international research achievements on transportation energy consumption, such as external cost determination of energy consumption, influencing factor analysis, statistical indices and data comparison, interactive relation between...
Bicycles create obvious impact on motor vehicles' behavior on urban road especially in China with mixed traffic. These influences can be divided into two states: friction and block interference. Based on the data of interference of bicycles on vehicles' driving in typical road section in Beijing, this paper quantitatively analyzes the velocity changing tendency of vehicles under different interference,...
From aspects of scientific value, technical feasibility and economical efficiency, this paper reviews practical demonstrations of transport projects related to the application of different types of maglev technologies in different countries. Based on the experienced progress, it summarizes the advantages and disadvantages of the world's maglev technologies in the possible development of China, and...
Driving decision in the car following model is a complex process of inference, decision, and execution. There is a lot of vagueness and randomness in the knowledge description and inference mechanism. Through the analysis of the problem of recent research, the article applied the cloud model theory to the car following model. Based on the description of the processing of different decision information...
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