Journal of Transportation Systems Engineering and Information Technology

Construction and Prospect of Information Systems
For Chinese Railways

MA Jun-pei

2005, 5(5): 1-5 .

Abstract ( )

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The railway information technology developed from the single section-ranked elementary application primarily in the data processing to today’s integrated application referring to every sections，covering all the railway roads and processing in real time. This paper summarizes the background of Chinese railway information construction, introduces the achievement of railway information infrastructure construction including data traffic network covering all the roads and the data processing flat，and the application system construction including the selling and booking
railway ticket system, the auto-recognizing vehicle number system,the transport information management system, and train directing system.
Finally it forecasts the fine foreground of railway information construction, sticking to the high outset and level,seizing the jumping-development opportunity，achieving the noticeable rise in the transport capacity, transport organization efficiency and the transport service quality, and bringing into play as the backbone in the modern integranted transport system.

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The Latest Achievements of Chinese National ITS Architecture

ZHANG Ke,QI Tong-yan,LIU Dong-mei,WANG Chun-yan,HE Rui-hua,LIU Hao

2005, 5(5): 6-11 .

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This paper describes the latest achievement of Chinese National ITS Architecture by the project of ‘Research on Chinese ITS architecture and Development of Support System for ITS Architecture Development’. Frist,the revision of the first version of Chinese National ITS Architecture,including the improvement of the theory and method of ITS Architecture development,update of ITS user services,reversion of the content of National ITS Architecture,are presented.Then,the activities of developing a customized software for support of ITS Architecture development are described in detail. Finally,this paper introduces the
Development of two regional ITS Architecture.

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Analysis of RITS Logical Structure

MENG Yan,JIA Li-min, SUN Yang

2005, 5(5): 12-17 .

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The characteristic of RITS is a large scale，complicated structure，various factors and difficult system design .The key of system design and construction is the reasonable structure，data and correlation of model-described system,which makes the complex information relationship simple and is convenient for the overall RITS design.The paper put forward a disassembly method about logical structure based on the fuzzy clustering,in order to reduce the complexity of system design. Based on setting up a fuzzy conjunction intensity matrix which describes the conjunctional degree
between processes，with fuzzy clustering ,we can disassemble the RITS logical structure into several relatively individual functional parts，which is able to make the system disassembly process more fine and more precise， in order to provide foundation for the realization of system physics and relative
research.

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Reviews of Socio-Economic Impact Evaluation
for VMS Project on Freeway

SUN Bao-feng,JUN Zhi-cai,WU Wen-jing

2005, 5(5): 18-22 .

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Research Reviews of Socio-Economic Effect Evaluation for VMS Project on FreewayAbstract:VMS is one of the important parts of ITS. The paper accounts for home and abroad researches on the evaluation of VMS project，points out the main problems in the past researches，analyzes socio一economic benefits of VMS project，and sets up a calculation model.Based on the analysis of different methods，the paper chooses cost一benefit analysis to evaluate socio-economic effect of VMS. In order to evaluate the socio-economic effect of VMS, the control strategy of VMS project should be analyzed firstly, and then technology assessment of VMS should be put up. The former is a design basis and the latter is a supporting technique for evaluating the socio-economic effect of VMS, so the VMS’s social benefits are presented through the effect of its technology. It will show a desirable direction for study to identify its effect and social benefits，especially to evaluate the synthetic efficiency between it and other part of ITS,with putting VMS into
the situation of traffic network system.

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Theoretical Analysis of the Interchange Passengers
in Urban Transport Terminals

ZHOU Wei,JIANG Cai-hang

2005, 5(5): 23-30 .

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The urban passenger transportation trans-shipment is a complex problem. It relates to many departments and subjects，and has the characteristics of sociality, comprehensiveness and intersection. This paper analyses the meanings and classes of traffic transfer as well as the influence factors for effective running. On the basis of the analysis，the paper constructs the theoretical frame for studying the traffic trans-shipment，according to the courses of object theory analysis，content designs，test implements，especially introducing the theory and method of analyzing the transshipment quantity，the transfer organization, the policy and method of constructing trans-shipment as well as integrated appraise for studying the urban passenger transportation trans-shipment.

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Randomized Model on Layout of Regional Distribution
Centre and Algorithm

CHEN Huan –jiang,SONG Han

2005, 5(5): 31-33 .

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The layout of regional distribution centers has very important significance to raise service level and lower distribution cost. Actually, the distribution demands are,random in distribution system, so traditional models on the layout of distribution centers，in which the distribution demands are considered as constants can not describe the influence of the randomness in the distribution demand on the layout of the distribution centers. The paper mainly deals with the model on the layout of regional distribution centers and the algorithm, when the logistics demand is random
variable. Because we consider logistics demand as random variable，the model we set up is more adequate with logistic reality. To solve the model，we use definiteness equivalence and filter condition to simplify the model as some simple linear program feasible sub-problem，so as to solve and use it easily.

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The Analysis on Speed of Mixed Traffic Flow With
The Curb Parking Lots

CHEN Jun,WANG Wei,MEI Zhen-yu

2005, 5(5): 34-36 .

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Based on non-physical separating road, this paper investigating the flux and speed of mixed traffic flow in Nanjing. And then setup a group of models between vehicle(bicycle)speed and flow saturation with the curb parking lots has or not. The average parking times were taken into account. These models were used to judge if we could set the curb parking under the minimal affect to mixed traffic flow.

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A GA-Based Algorithm for Light Railway Vehicle’s Task
Sectioning and Mating Optimization

YU Zu-jun

2005, 5(5): 37-40 .

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This paper analyses the characteristics of the light railway vehicle’s running task, which is multiplitate when divided into some sections, and pattern shooting when piared two sections. We use the AI to determine the basic model of task’s sectioning and mating,and build the object function and the constraint function. It assures that the driver gets off and gets on the train at the only one of two appointed stations,and the off-on-train’s time is between 0.5 to 2 hours,and the total off-on-train’s time of the all drivers is minimun.We design a specific self-cross genetic algorithm to solve this problem, and get the optimum design of the task sectioning and mating. This algorithm can be used to the general problem that it should be divided into multi-section and off-on-train at the same station in the specific multi-station.We get a good result when this algorithm has been used in the MIS of the Tian-jin littoral express light railway.

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A Method for Regional Induced Traffic Calculations

YANG Jing,MAO Bao-hua,DING Yong,HE Yu-qiang

2005, 5(5): 41-45 .

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As an important part of traffic forecast and project evaluation of highway, induced traffic has get more and more attention. From the concept of the induced traffic, its mechanism was analyzed in both micro and macro perspective. On the basis of the present calculation method, a multi-linear regression method is given to the regional induced traffic calculation. A calculation model，which is more suitable for the traffic situation in China than the former one, is developed. Using the data of Beijing (1978-2003) for calculation, we find that road miles have a statistically significant relationship with traffic. The result is about 0.17 in the short run and 0.29 in the long run.

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Dynamic Traffic Assignment Based on Travel Trait

XIONG Zhi-hua,SHAO Chun-fu,XIAN Kai

2005, 5(5): 46-49 .

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A dynamic taffic assignment model combined with reliability is presented in this paper and the road network reliability is described as the travel trait. Firstly, a simulation-based DTA(dynamic traffic assignment)model is discussed where meso-scopic simulation method is used to simulate vehicles running in packets on the time-varying road network and the time-dependent network performances are described. Secondly, with the help of Wardrop’s equilibrium principle，a dynamic reliability traffic assignment model is put forward. No paths with lower reliability are used and travelers cannot improve the probability of arrival at destination within a specified time by changing route choices. Finally, to illustrate its operation, it is applied to an example network and to simulate the route choice behavior.

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Research on Evaluation Index of Regional Highway
Network Layout Based on Fractal Geometry

LI Wen-hua,YANG Zhao一sheng,WANG Xi-wei

2005, 5(5): 50-53 .

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Highway network layout is an important content and tache of highway network programming. The theories and methods to evaluate of highway network have developed more mature than before which is very important to the development of highway network programming，even to the construction of highway and traffic of our country. With going deep into the recognition of highway network programming, some domestic experts advanced many new insights and specific methods about highway network layout and structure. "Fractal geometry" is having been broadly used in many country economy departments as a new subject. This paper analyzes current highway network layout evaluation index system. The evaluation index of cover degree is presented based on fractal geometry and correlative analysis is made in quality.

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Driving Effect Analysis of Highway Construction
on National Economic Development

ZHANG Zhi-min,WANG Ben-Li,ZHANG Yong-man

2005, 5(5): 54-57 .

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In order to response the effect of the economy crisis of Southeast Asia，our country carries out positive financial policy on the investment of highway construction to bring along the increasing of gross economy. But the study that the driving effect on the gross economy bought by the highway construction investment is not mature. On this basis，this paper analyses the basic theory and relationship of highway construction investment and gross economy，and then establishes the foundation of the future research on the driving effect on the gross economy bought by the highway construction investment.

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Study on Quantitative Analysis Method for Social Benefit
in Expressway Post Evaluation

SHUI Chang-feng,JIA Yuan-hua,LI Xing-hua

2005, 5(5): 58-62 .

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In China a great number of expressways programs have been completed and held in operation，entering the phase of post evaluation at moment. However，it remains to be discussed in post evaluation how to evaluate the social benefit of the expressways programs objectively and systematically. The paper presents synthetic quantitative method on the basis of systematic analysis of various social benefit quantitative methods in post evaluation of expressway, combined with features of social benefits from expressway programs，ie，calculation with many models according to certain methods to determine the weight. And a example is also given，specifying the quantitative calculation of the social benefit generated with the very method presented in the paper.

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An Optimal Modeling with Algorithm for Sustainable
Logistics Center Location Choices

ZHANG Bei,GAO Zi-you,ZHANG Hao-zhi

2005, 5(5): 63-69 .

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Sustainability must be considered adequately in establishing modern logistics system. In this paper，we propose a bi-level programming model for sustainable logistics centers location problem，in which the upper-level problem minimizes the total cost for planners，while the lowerlevel problem considers a spatial price equilibrium model described by variational inequality. In addition, the standard of pollution charge is considered to satisfy the environmental requirement. An algorithm based on genetic algorithm is designed. The applications of the model and the solution algorithm are illustrated by an example.

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The Classification for Traffic Flow Macroscopic Model

XIONG Lie -qiang,LI Jie

2005, 5(5): 70-72 .

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The paper rewrites the traffic flow macro models in the form of system of quasilinear hyperbolic partial differential equation of first order，and classifies the models in terms of the coefficient in the equation. According to whether the characteristic speed is smaller than macroscopic speed and whether the model depends on foreign speed- density equilibrium relation，and according to the flow characteristic shown in the model，the paper proceeds to evaluate some models. Finally, the result shows that three ideal models of the traffic flow are fit for studies.

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Attention on Issues of Car Consumption Culture
of Urban Traffic Management

XUE Xin-wei

2005, 5(5): 73-77 .

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When referring to the problems of urban traffic, visible factors including the construction of road transportation equipment，establishment of traffic law and the degree of executing law are concerned, whereas invisible factors such as construction of culture are neglected. At the invisible point of view, based on the flexible and basic culture construction, and compared with what had been seen and heard about the traffic phenomena in China and abroad, the paper proves the importance of culture construction in the urban traffic construction and conducted meaning in the future development of urban traffic, suggests that when family cars are beginning to develop just now, it is necessary to guide and cultivate advanced and civilized consuming culture of cars in time.

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Impact Analysis of Freeway Construction
on Regional Economic Development

CUI Xian-hua,REN Yuan,YANG Jing,LIU Zi-ling

2005, 5(5): 78-83 .

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Freeway possess some characteristics including high speed, high pass capacity, low transportation cost，safety and comfort. These characteristics are benefit for making use of the ground assembly, reducing the energy consuming, and advancing the traffic safety. The highway plays an active effect on continuable development of economic society and harmonious society construction. Based on several examples of highway projects，adopting the theory and method of system analysis，in terms of traffic and economic integrative development，the paper explains how highway adjusts and optimizes regional industrial structure，explores regional resources，promotes urbanization construction, strengthens economic cooperation, coordinate region and promotes the harmonious society. The paper also provides the way to obtain the information of highway influencing the regional economic development.

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Dynamic Traffic Assignment:
Review and Future Research Directions

W. Y . Szeto, Hong K . Lo

2005, 5(5): 85-100 .

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The properties of Dynamic Traffic Assignment (DTA) have important implications on the fidelity and accuracy of the models for offline network planning and policy evaluations as well as real-time operation and management. These properties are not fully addressed in the existing literature，even though DTA remains a very active research topic. It is an opportune time to summarize what has been learned and what lies ahead. This paper reviews the analytical formulation approaches of DTA，compares the properties of DTA with different forms of traffic flow models，discusses their implications，and suggests future research directions.

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A Pl anning M odel for Determining Optimal
CMS Locations on a Freeway-Arterial Network

FU Li—ping,LI Shuo,Jeff Henderson

2005, 5(5): 101-120 .

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This paper presents an optimization model for locating Changeable Message Signs(CMS) on an integrated freeway—arterial network. Compared to existing models, the proposed model represents a well—balanced compromise between computational efficiency required to solve problems of realistic size,and model realism to ensure the quality of solutions.The model has three unique features:(1)it recognizes that locating CMS is a planning problem that must take into account both current and future needs and benefits;(2)it evaluates CMS benefits over multiple time periods with different traffic distributions;(3)it explicitly considers inherent variations in incident characteristics
across links and over time.A sensitivity analysis is performed to examine the potential impacts on optimal CMS locations resulting from uncertainties in various input parameters such as traffic demand,incident attributes and driver behaviour. Lastly,the proposed model is applied to the Highway 401 express—collector freeway system in Toronto and CMS location solutions are examined.

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Optimizing Vehicle Fleet Management with
Travel Time Reliability Constraint

William H.K.Lam,Chi Chen,K.S.Chan1,Ai-Zhu Ren

2005, 5(5): 121-135 .

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Although uncertainty on travel time is an important aspect of routing for many freight carriers, the existing works on goods vehicle fleet management problem do not take into account the uncertainty on travel time resulting from the fluctuations of traffic flows on congested roads in urban road network.This paper introduces the constraint of the travel time reliability into the goods vehicle fleet management problem particularly for the just-in-time delivery of goods such as the ready-mixed concrete.The mathematical model formulation of the reliability-constrained vehicle fleet management problem is presented together with the heuristic solution algorithm. An example network is uesed to illustrate the applications of the proposed model and solution algorithm.It was found that the total travel time of goods vehicle fleet is increased when the required travel time reliability is increased.

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