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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....
As an important place of pedestrian activities, the air quality of urban street is closely related to the human health, and the effects of air pollutants on human health have a close contact with the actual level of exposure. According to the concept of exposure, the paper analyzes the process of the exhaust pollutants from vehicles to pedestrians and the influencing factors under the urban traffic...
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...
A hierarchical network and traffic assignment model is developed for multimodal transportation networks to meet the prediction of large-scale transportation demand in this paper. In the proposed model, the city center and transportation terminal of different modes are defined as central nodes and transfer nodes respectively to characterize travel behavior of passengers. The generalized cost function...
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...
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