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In this article we use real traffic data to confirm that vehicle velocities follow Gaussian distribution in steady state traffic regimes (free-flow, and congestion). We also show that in the transition between free-flow and congestion, the velocity distribution is better modeled by generalized extreme value distribution (GEV). We study the effect of the different models on estimating the probability...
Based on a brief introduction of typical battery features, several crucial issues in logistic planning for Electric Vehicle (EV) battery applications are discussed in this paper. The obvious issues include the access of battery charging stations, the accessibility of emergence swapping, and the monitoring of batteries at charging stations on network. Standardization of the battery and energy exchange...
We structured compound dynamics simulation model demanding highway conveyance force, made computer trends simulation. Based on the result, we tentatively calculated logistic storage and that demanding highway conveyance force.
The rapid economic development of Beijing has brought itself a huge demand for logistics, while city distribution has became an important method to support the normal operation and economic development of the city and a chief functional distinction of the logistics system. Evaluating city distribution capability and finding the bottleneck restricting its development are basic to optimize the logistics...
Transportation will be increasingly vital in China as the nation's economy continues to change from a planned, centralized system to one that is market-based and decentralized. In this paper, we propose a Data Envelopment Analysis (DEA) approach to evaluate Transportation System Efficiency (TSE) for 31 major regions (including 23 provinces, 4 municipalities and 4 autonomous regions) in China. This...
In China, the toll roads will gradually implement the weight fee policy, which increases the toll of freight vehicles and the transportation cost of logistics enterprises, in such a case, logistics enterprises should choose a proper type of vehicles in order to reduce the toll. The paper presents a new model of choosing vehicle type, which compares the toll under different overloading rates and finds...
As an important phase in the plan of Logistics Park, traffic volume forecast and traffic assignment are always the research focus.In this paper, the improved traffic volume non-repeated coefficient method was introduced to forecast the Traffic Volume of Logistics Park, based on the results, system optimization assignment model was used for traffic assignment of Logistics Park with the aid of TRANSCAD...
Starting with analyzing the significance of the express freight information platform, this paper proposes a structural model of the express freight system. Also, an express freight information platform model based on RFID and Web technology is built, and the modelpsilas operation flow, data flow, a standard technical solution toward the efficient communication among different userpsilas information...
Logistic infrastructure (LI) is an important area of urban competition capability. The connotation of Logistics Infrastructure Capability (LIC) is analyzed in this paper. Compared with the extensive research on LIC in developed world, empirical work is still rare in developing world. In this paper the theory of LIC is firstly overviewed. Then a new evaluation index system for LIC evaluation is set...
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