Journal of Transportation Systems Engineering and Information Technology

The Basic theory of Preparing Transport Development Strategy

WANG Qing- yun

2005, 5(3): 1-8 .

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The definition of Transport Development Strategy is a macro-strategy and it’s very important for implementing national development strategy. The macro strategy management theory basic on theory of the corporate development strategic management is a part of the strategic management theory. Three key points for the preparing Chinese transport
development strategy, such as issue analysis of transport development, what is strategy in transport area，how to deal with regulation and competition in transport sector. Most important thing is to give the solution in transport development strategy combined strategy theory with Chinese transport situation.

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Research on the Adaptive Relationship between
Highway Transportation and
Social & Economic Development in China

LI Wei-dong, WANG Jia-qiong

2005, 5(3): 9-12 .

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Based on review of theories of relations between transportation and national economy, such as transportation, relationship of alternative push-pull between transportation and economy, transportation cost threshold value，authors discuss the definition of adaptive relationship between highway transportation and social & economic development at first. They think that the adaptive relationship includes law, stage and sustainability between highway transportation and social & economic development. The evaluation index system of adaptive relationship between highway transportation and social & economic development is built. The adaptive relationship in China is evaluated with nonlinear weighted evaluation method. At last some suggestions for improving the adaptability between highway transportation and social & economic development are provided.

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An Analysis of Impact of Intelligent
Transportation System (ITS)on Urban Comprehensive
Public Transport Systems Coordination

CHEN Xu-mei,YU Lei,LIN Guo-xin

2005, 5(3): 13-17 .

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This paper first presents the concept and implications of the urban comprehensive public transport systems coordination. Then, on the basis of an analysis on the characteristics of Intelligent Transportation System (ITS)，the key ITS technologies that have apparent impact upon the systems coordination are identified through an expert survey and Principal Component Analysis on the relationship between those ITS technologies that can be applied to the road transit system and urban rail transit system and urban comprehensive public transport systems coordination. Further, an impact analysis is conducted from a qualitative perspective. Finally, some recommendations are provided in light of the state-of-the-practice in China.

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Real-time Traffic Parameter Estimating Based on Mobile
Phone Locating and Clustering

SUN Di-hua,MA Li,CHEN Wei-xia

2005, 5(3): 18-23 .

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In this paper，a method of estimating real-time traffic parameters is presented based on mobile phone locating and micro-traffic-information, that is，the state of individual vehicle’s traveling. The state of vehicles’ traveling is estimated by clustering, using mobile phone’s locating and its moving speed obtained from cellular network as information for examination to achieve real-time traffic parameter estimating on freeway. The method proposed in the paper is able to be used in traffic parameter examination in a big way, and employing existing cellular network, it can save a large amount of examination equipment investment. The result of our experiment has proved its effect.

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The Hardware Design of vehicle GPS/DR Position System

BI Jun,GUAN Wei,SHEN Jin-sheng

2005, 5(3): 24-26 .

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Two kinds of position technologies such as GPS and dead reckoning system are discussed, The hardware frame of vehicle position system based on two position technologies is proposed. The different performance of PC104 computer, Jupiter GPS OEM receiver, HMR3000 electronic compass and milemeter is discussed. The communication circuit design between PC104 computer and Jupiter GPS OEM receiver, HMR3000 electronic compass and milemeter is discussed respectively. The experiment results show that the design of hardware system is valid.

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Data Preprocessing Technique Of Common Information
Platform Based on ATMS

JI Chang-xu,YANG Nan,GAO Ge

2005, 5(3): 27-30 .

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This paper discusses the data preprocessing of common information platform based on ATMS. First，this paper gives the definition of common information platform based on ATMS and function. Then the paper argues the techniques of data preprocessing of common information platform based on ATMS. Furthermore, the paper advocates the identification of data failure and recover failure data. This paper will provide the principles for data preprocessing of common platform based on ATMS.

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A Planning Framework of Urban Public
Transport under Market Economy

ZHAO Ya-li,YANG Dong-yuan

2005, 5(3): 31-35 .

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With the development of market economy,the relationship between governmental sectors and operating sectors has changed. The government must adjust its functions so as to accommodate and push the process of market economy. Planning is one of the important functions of government and under market economy the original planning pattern limits the market in some ways. Therefore， this paper tries to explore the relationship between the macro-control and market development. In this paper, a new planning pattern is put forward, which is characterized as central supervision, stratified planning and tendering competition. In this paper, how to coordinate different organizations in network planning is also described.

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A Selection to Traffic Impact Improved Schemes

XUE Jin- gang, GUAN Hong-zhi,HAN Yan

2005, 5(3): 36-40 .

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In recent years，traffic impact analysis has been carried out widely in many cities of china, and its importance has also increasingly drawn the attention of departments-in-charge.Since we started relatively late and has used a great deal foreign experience in our practice, some technological problems remain unsolved. One of the key tasks of traffic impact appraise to devise practical measures for improvement. A comprehensive appraise and selection of the projects of improvement ought to be made to achieve the most optimized objectives. The method of level analysis is considered to be relatively practical in system decision and has a wide scope of application. This paper sets up a model using the method of level analysis and calculates on the basis of appraise of improvement projects in traffic impact analysis，and obtain an ideal result A study of the application of level analysis in the field of traffic and transportation has been made.

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An Optional Method of Urban Public
Transport Development Mode

LI Yuan-yuan,ZHOU Wei,WANG Yuan-ging

2005, 5(3): 41-45 .

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The option of urban public transport development mode is an urgent problem in putting urban public transport priority development strategy into practice. On the basis of analyzing the technological and economic characteristics of several major existing urban public transport mode (bus public transit, bus rapid transit, light rail and subway)，and taking the feature of urban public transport mode selection problem into consideration, the paper establishes decision matrix of urban public transit development mode and makes a choice of urban public transit model through solving the
problem of multi-property decision. And it defines supply and demand matching index of urban public transport to validate passenger flow adaptability of the selected mode. Finally, this paper, taking Xi’an as an example, demonstrates the applicability and reasonability of the method proposed above.

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Optimal Route Selection for Express Freight
Transportation System Based on Grey Theory

YU Shi-jun,ZHAI Rui,LI Xu-bong,YANG Wen-dong

2005, 5(3): 46-50 .

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Express freight transportation is a kind of modern transportation production styles， which is one of development trends of future freight transportation. Route selection for express freight transportation system is a key problem which should be resolved in the procedure of express freight transportation system planning and operating. Route selection is a complicated problem, which is associated with many factors. In this paper, factors influencing route selection of express freight transportation system are analyzed, and corresponding evaluation indices are introduced. Furthermore，an optimal route selection model is set up by applying grey relational grade (GRG) analysis. The index-weight is determined based on the theory of entropy, thus the effect of subjective factorsi sa voided.Finally,a calculating example is given,which proves the model feasible and practicable.

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Application of Software Engineering Management
Methods in the CRM System of the Logistics Industry

WANG Zhen-hua,WANG Xi-fu

2005, 5(3): 51-55 .

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In logistics industry, new technologies, new management ideas and new marketing theories have been put into practice. Since the CRM and logistics is very hot，the combination between them should create a miraculous result. Considering the logistics-customer relationship management as L-CRM, the paper would present how a logistics company could do well in CRM from the view of integrating the methods of the Software Engineering Management into the CRM of the logistics companies. And the paper, from the view of the process management，focuses mainly on how to use the methods of the Software Engineering Management to construct the L-CRM system.

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Modeling and Application of the Railway Wireless Channel

JIANG Qiu-hua,SHEN Hai-yan,SHI Tian-yun,CAI Xiao-lei

2005, 5(3): 56-60 .

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An innovative mobile radio channel model is proposed by integrating many factors such as shadowed fading, Rayleigh fading, doppler frequency shift，multipath fading and so on. The paper makes an simulation on the model by using matlab software. The simulation results of signal envelope and spectrum coincide with the parameters of the model. So it can be concluded that the model is effective.

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A Metadata Content System of
Rail Transit Fundamental Database

LIANG Yan-ping,LIU Reng-kui,RUI Xiao-ping,WANG Fu-tian

2005, 5(3): 61-64 .

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Based on analyzing the content and characteristics of railtransit fundamental data,this paper discussed the metadata concept and function of rail transit fundamental database, then established a perfect metadata content system of rail transit fundamental database. This system is composed of three levels:metadata for database, metadata for the data set and metadata for the data elements. The paper also analyzed the metadata function and metadata elements at each leve1. The research results will provide a basis for the construction of a database plat and information sharing.

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A Hierarchic Model of Communication-based Train Control
System Using Colored Petri Nets

WU Dong -yong, ZHANG Yong

2005, 5(3): 65-70 .

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Communication-based Train Control System (CBTC)is an important development direction of Chinese railway. In this paper, on the basis of analyzing the structure of CBTC system, the modeling and simulation of the CBTC were carried out by using Colored Petri Nets. Colored Petri Nets is an useful modeling method for describing the structure and function of a system with graphs，which is special suited for modeling and simulating a big, asynchronous and concurrent system. In order to make the model simple and clear，a three-level hierarchic CPN model of CBTC is established with the help of CPN/Tools, which includes integral layer，processing layer and functional layer. This work lays a good foundation for developing the software simulation platform of CBTC system.

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Optimization Model with Algorithm of Inland Empty Container
Depot Location Problem

CHENG Ci-sheng,CHEN Bao-xing,LI Ming-shun

2005, 5(3): 71-76 .

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Inland empty container depot is the node of empty container allocation network，which is very important for a container transportation company tO reduce cost and improve service quality． The paper establishes a mix-integer planning model of the location problem of Inland Container Depot with balancing requirements that optimize the layout of empty container allocation network． W e present an algorithm of tabu search for the problem ，and the tabu search includes a number of refinements，The computational experiments show it is very effective in global optima．It is the new method and thought for the location problem of Inland empty container depot．

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Effect Mechanism of Stagger Shifts and
Its Traffic Feasibility ——— A Case Study of Shanghai

ZHU Hao-ran,YANG Xiao-guang

2005, 5(3): 77-81 .

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Implementation of Staggered Shifts is a comprehensive and systemic problem． Conceptualized implementation cannot lead to any good transportation profits，and on the contrary，it worsens urban transportation conditions．In the paper，the current situation of Staggered Shifts in China and its basic concept are introduced，and its effect mechanism on traffic system is described．It brings comprehensive impact on transportation system from three aspects：time distribution，space distribution and transportation structure proportion．As an example，the traffic feasibility of implementation of Stagger Shifts in Shanghai is analyzed from main urban roads’asic facilities’traffic time characteristics，and the time characteristics of public traffic passenger volume． In the end，according to the result and transportation development planning of Shanghai，a conclusion is made that Staggered Shifts iS infeasible in the near future．

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A New Method of Road Accident Black-spots Identification

YAN Ying,LIU Hao-xue,YOU Xiao-ging,ZHANG Wei

2005, 5(3): 82-86 .

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On the basis of comparing the black-spots identification methods at home and abroad, by analyzing the accident statistical data of national road 312, the paper puts forward the accident cumulative frequency method that can find the black-spots in the road, and make some improvement considering various comprehensive traffic safety factors. On the application case analysis，this paper introduce its uses and compare two results using the different methods. Application results show that the improved methods have the advantages of precision location and economical efficiency, so it is more practical in the identification of black-spots in China.

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Discussions of the Management and Control of
Urban Freeway／Expressway

CHEN De-wang,WU Jian-ping,CAI Bai-gen

2005, 5(3): 87-91 .

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The paper discussed some basic problems in urban expressway/ freeway traffic management and control by theoretical and simulation approaches．Discussions cover the topic of on-ramp traffic control，off-ramp queue length control and expressway traffic priority，etc．Results of analysis show that：(i)although ramp-metering control can increase the delay on ramp，it can also increase the efficiency of the whole traffic system including urban freeway and ramp；(ii)ramp-metering control has positive and negative effects tO the network traffic， and optimized ramp- metering algorithm can bring forth the positive effeCt on both urban freeway and network traffics；(iii) off-ramp queue may effectively be controlled by using queue length controlled signal controllers． This will avoid the excess off-ramp queue effectively and increase the operational efficiency of urban freeway and the whole traffic network．

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Traction Power System Simulation
in Electrified Railways

T．K．Ho,Y．L．Chi,L．K．Siu,L．Ferreira

2005, 5(3): 93-107 .

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Electricity has been the major source of power in most railway systems．Reliable，efficient and safe power distribution tO the trains is vitally important tO the overall quality of railway service．Like any large-scale engineering system ，design，operation and planning of traction power systems rely heavily on computer simulation．This paper reviews the major features on modelling and the general practices for traction power system simulation；and introduces the development of the latest simulation approach with discussions on simulation results and practical applications．Remarks will also be given on the future challenges on traction power system simulation．

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Combining Macroscopic Method with Microscopic Method
and Promoting New Development of Traffic Flow Theory

WU Qing-song,JIANG Rui,LI Xiao-bai,JIA Bin,HU Mao-bin

2005, 5(3): 108-115 .

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For this paper，in the light of research practices of authors in the recent years，after reviewing the study object and the study methods of traffic flow theory in brief，we dissertate the developmental states and subsistent problems of some kinds of theoretical models of traffic flow． Aiming at these problems and following the idea of combining macroscopic methods with microscopic methods. we investigated the differences and relations of these two kinds of research methods，and developed a number of new theoretical models of traffic flow which are more suitable to the practical traffic． By using these new models，we can describe the practical traffic problems more accurately and more effectively． The research results indicate that combining macroscopic method with microscopic method will promote the new development of traffic flow theory．

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Information Entropy Models of Trip Distribution

R. H. YAO,D. H. WANG

2005, 5(3): 116-126 .

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Entropy maximization approach has been widely used in transportation planning.It provides theoretical basis for a class of forecast models on traffic demand. In this paper，the concept of entropy from information theory is borrowed to describe inhabitant trip distribution and then a trip distribution model is presented under constraints of typical characteristics based on origin moments. The actual meaning of the parameters in the built models is instructed in details. The model is characteristic of generality. The concrete form of the model depends on the order of the highest origin moment which has a great impact on the precision of the model and the labor of parameters calibration. In order to ascertain the parameters in the models，the applied method of calibrating parameters is put forward. Because the number of the most order origin moment has larger effect on the precision of the models，the simulated case of the models of which four trip mode respectively correspond with five most order origin moment is studied by applying the data of trip survey in Changchun city for finding the relation between the two. Because the built models in the paper are a series of models，the entropy method which can ascertain system distribution is educed according to the maximum information entropy theory in order to compare the difference of which the differenmodels describe the same problem. And the above models are compared by using the method. The validated results of survey data show that the information entropy model of trip distribution can correctly describe trip distribution principle and the entropy method can simply and effectively evaluate the difference of which the different models describe the same problem. The entropy models and the entropy method mentioned in the paper have the instructed meaning to traffic planning in city.

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A Review of Traffic Incident Duration Anal ysis

Wenqun Wang,Haibo Chen,Margaret C．Bell

2005, 5(3): 127-140 .

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This paper reviews the findings of research in incident duration analysis． A brief introduction of traffic incidents，incident types，and incident management systems is given first．The theoretical argument of the distribution of the incident durations is explained．Several methods used to analyse the incident durations，including variance analysis，regression，nonparametric regression， decision tree，hazard duration，and fuzzy logic，are described．The research concludes that the most research found that the distribution of the incident duration is right skewed and that standardisation of the data collection is important for the incident duration analysis． It is also found that the traditional statistic methods have difficulties in modelling the incident duration with the incomplete incident data． The future research in incident duration analysis was recommended such as artificial intelligence methods and standardisation of the data collection．

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