bluuebunny/crossref_metadata_2025 huggingface dataset:
Two-Wheelers Users' Injury Analysis Based on Cars to Two-Wheelers Accidents Data
Authors: Liu Fu Ju , Bu De Jun , Mao Yan
Published: January 2014

China In-Depth Accident Study (CIDAS) group collects accident data by on-scene investigate way in Changchun, Beijing, Weihai, Ningbo and Foshan. Based on the CIDAS data, this study analyzed the group characteristics and body injury distributions of the casualties in motorcycles, electric bicycles and bicycles. As a result, the mixed driving is the major environmental factor for cars to two-wheelers accidents, and most of such accidents happened in crossroads. Moreover, 16 to 65 years old two-wheelers injury users accounted for 62.0% of the total two-wheelers casualties.Within the two-wheelers injury users over 46 years old, users with AIS4 injuries occupied 22.4%. Besides, AIS4 bicycle injuries over 46 years old accounted for 47.6% of the total injury users over 46 years old. A similar injury parts distribution and AIS grade distribution in the same injury part were found among the casualties of motorcycles, electric bicycles and bicycles users.
Anticipation Driving Behavior in Car Following Theory
Authors: Lv Feng , Ye Cai Hong , Ge Hong Xia
Published: January 2014

In this paper, a new anticipation driving car-following model (AD-TVDM) is presented based on the two velocity difference model (TVDM)[1], taking into the effect of anticipation driving behavior in real world. The nature of the model is investigated by using linear and nonlinear analysis method. A thermodynamic theory is formulated to describe the phase transition and critical phenomenon in traffic flow and the time-dependent Ginzburg-Landau (TDGL) equation is derived to describe the traffic flow near the critical point.
Framework for Dynamic OD Matrix Estimation Based on Multi-Source Traffic Data Fusion
Authors: Zhou Xu , Liu Zhao , Zhao Xiao Xiao , Guo Jian Hua
Published: January 2014

The advanced transportation management and information systems (ATMIS) are strengthening the capability of collecting multi-source traffic data constantly from the road networks. Considering the fundamental role of dynamic Origin-Destination data for many advanced traffic management systems, it is promising to apply the multi-source traffic data to improve the dynamic OD estimation. Targeting dynamic OD data estimation, the classical OD data estimation approaches are discussed, and a framework of dynamic OD estimation based on multi-source traffic data is proposed and analyzed. Future researches are recommended in the end.
The Analysis of Driver's Behavior in Non-Signalized Intersection Based on the Game
Authors: Zhang Lin , huang Xuan Wei , Wu Wei Ming
Published: January 2014

In order to study the driver's decision-making behaviors of the conflict vehicles in non-signalized intersection, according to time refinement, the driver's personality factors and the relative potential factors in the different strategies which affect the driver to make decisions, Based on the dynamic reduplicate game theory, the utility function of the driver's behaviors was built up. As the decision-making behavior by the driver in the process of cross-road, analyzing the different combination of the utility of the driver's decision-making behavior, Nash equilibrium was existed in a single game process, and the driver's optimal decision behaviors in a dynamic game was obtained. The illustration shows that impulse drivers in the decision-making period of time are more willing to choose to accelerate the first strategy; mild drivers prefer to choose acceleration strategy or uniform strategy; cautious drivers prefer to choose to uniform or deceleration strategy.
Research on the Problems and Countermeasures of Urban Pedestrian Traffic System
Authors: Zhu Zhen Jun , Meng Jia Qi , Zeng Jun
Published: January 2014

While vigorously promoting sustainable urban transport development today, as the most basic mode of transportation, pedestrian traffic draws people's attention. Meanwhile, China's urban population has seen a accelerated aging trend, which will have higher requirements in pedestrian traffic environment. This paper discusses the characteristics and position of pedestrian traffic, analyzes the main problems of current domestic pedestrian traffic and proposes countermeasures.
Evaluation of Road Traffic Safety in Huai Yin District of Jinan City Based on AHP
Authors: Wang Ya Fei , Zhang Dong Xu
Published: January 2014

Analytic Hierarchy Process (AHP), which needs less information and shorter time on decision-making, is selected for road traffic safety evaluation in this paper. Combined with the instance in Huai Yin district of Jinan city, the structural model that includes road conditions, intersections, straight sections, bends and ramps is proposed. Delphi method was used to construct the judgment matrix and then the MATLAB was used to calculate the corresponding weights of the various index of the entire road system. Combined with self-assessment of each index, then the safety level of the road is figured out.
Research on Traffic Flow Velocity Characteristic at Temporary Reversible Lane
Authors: Cao Yi , Zuo Zhong Yi , Xu Hui Zhi
Published: January 2014

In order to analyze the existing problems of temporary reversible lane, traffic flow velocity characteristic at the period of direction changing was analyzed. Taking Huangpu road as the investigation object, the traffic flow velocity parameters before and after direction changing were investigated respectively. By the method of mathematical statistics, the individual vehicles velocities and the traffic flow velocity before and after direction changing were compared and analyzed. Using the method of regression analysis, the relationship model between velocity and density of reversible lane was constructed. This paper also discussed the problems of this kind of lane. The research showed that, in terms of traffic flow operation velocity of temporary reversible lane, there is obvious and regular difference between before and after direction changing. There is a certain relationship between the velocity and density. The problem of lower lane utilization ratio of temporary reversible lane usually exists.
Analysis of High-Speed Railway Roadbed Deformation in Seasonally Frozen Region
Authors: Zhang Yu Zhi , Du Yan Liang , Sun Bao Chen , Hao Geng Jie
Published: January 2014

Take the roadbed in seasonally frozen region of Harbin-Dalian high-speed railway (HSR) as an example,a finite element analysis model was built to study the deformation of roadbed during the freezing and thawing cycles. The analysis model and results were put forward. The results can provide some suggestions for the railway maintenance.
Optimization Analysis of Different Excavation Offsets in Railway Pilot Tunnel by CRD Method
Authors: Li Chun Kui
Published: January 2014

This paper focuses on the construction of 10 railway pilot tunnels by CRD method in Jiefang Road subway station in Changchun. To achieve the optimal construction offsets during the pilot tunnel excavation, reduce the impacts of group cavern effect, and maximize the production efficiency, the construction model of railway pilot tunnel in subway station was created by the finite difference software Flac3D. The author used the numerical simulation method to analyze the ground surface settlements and the stress variations with three different construction offsets. Then the optimal construction offset was obtained. It could provide a theoretical guidance to the construction of a similar project.
A New Method to Measure the Gross Volume Density of the Asphalt Mixture Specimen - Brush Wax Method
Authors: Peng Long Shi , Gong Min , Qiao Lan
Published: January 2014

The gross volume density of mix asphalt material compacted specimen is a crucial indicator in the design of asphalt mixture and quality control of asphalt pavement, and it directly determines the asphalt aggregate ratio and the degree of compaction. It has a great practical significance to distinguish and choose the test method of gross volume density correctly. The specific aspects of the methods to determine gross volume density have been controversial. A new method named brush wax method is put forward for these issues. The density, priority, VMA and compactness of asphalt mixture were measured by different methods in the tests. By comparison of the new method and the other methods, the main technical indexes of asphalt mixture obtained by the brush wax method are the only one which greatly satisfies the technical requirements.
Key Issues of Heavy Haul Railway CWR Design in Large Temperature Difference Alpine Region
Authors: Han Feng , Wang Bao Cheng
Published: January 2014

In this paper, combine with specific projects of Dahe railway design to study the key technical problems of laying CWR in large temperature difference alpine region, including stress-free temperature design, stability analysis of heavy haul CWR, heavy haul rail design in special sections, etc. The result has vital significance to guide the similar project design.
Research of the Properties of Basalt Fiber Reinforced Polymer Bar for Continuously Reinforced Concrete Pavement
Authors: Liu Qi Yang , He Ming
Published: January 2014

Continuously reinforced concrete pavement (CRCP) does not require any contraction joints which is a high-performance pavement structure type that just need a sufficient number of reinforced pavement longitudinal configuration to constrain sideway random crack width. With continuous basalt fiber as reinforced material and synthetic resin as the matrix material and adding appropriate adjuvants, basalt fiber reinforced polymer (BFRP) bar form a new type of material after pultrusion processing and surface treatment technologies. BFRP on the mechanical properties were studied by two kinds of test methods which are using extensometer strain detection and fiber optic strain sensing and the parameter of homegrown BFRP bars mechanical properties. Because of the lower tensile elastic modulus of BFRP bars compared with rebar, the mechanical properties of basalt fiber-steel wire composite bar has been studied along with the research corrosion and flexural properties of BFRP bar.
Testing Study on Fatigue Damage of Asphalt Mixture with Considering the Restoration Time
Authors: Ding Biao , Zheng Chuan Chao , Wang Hua Nan
Published: January 2014

Conventional fatigue damage test of asphalt mixture is usually under the condition of constant stress-mode or strain-mode, the specimen is broken when the cyclic load reaches certain number of times. In fact, vehicles on the road are not continuous, traffic volume is different in different time, there is a time interval between neighbouring vehicles. In this paper, time interval was set between two neighbouring cycles, the effect of recovery way, strain size and temperature on cumulative dissipated energy were analyzed. The results show that: in the early stages, recovery methods have little impact on the cumulative dissipated energy, with the increase of cyclic number, the value of trabecular under unconstrained condition will be greater than that of trabecular under constrained one. The bigger the strain size, the greater the value of cumulative dissipated energy; The lower the temperature, the greater the value of cumulative dissipated energy. Under the conditon of low strain size or high temperature , the value of cumulative dissipated energy decreases linearly. For the high strain or low temperature, there is a sharp decrease between the first cycle and second cycle, and then decreases linely in the later cylcles.
Comparative Research on Pavement Performance of Cement Stabilized Macadam Base in Different Molding Methods
Authors: Li Bo , Liu Jian Xuan , Li Xiao Hui
Published: January 2014

The indoor molding methods don't match the actual degree of compaction, which will cause the compaction over one hundred degrees and the more reflective cracks of the cement stabilized macadam base. In order to prevent this kind of phenomenon, a series tests on two kinds different molding methods were conducted. It contained maximum dry density, UCS,drying shrinkage performance and impact of aggregates performance .The results show that the dry density and UCS(unconfined compressive strength) of vibration molding are greater than isostatic pressing method's, the drying shrinkage performance of vibration molding is better than static pressure molding's. The vibration molding has less affected for the aggregate performance. It is more similar to the actual field.
Research on the Performance of Asphalt Mixtures of Polymer Fibers
Authors: Zhang Hong , Li Liang
Published: January 2014

The basic technical performance indexes are analyzed between polymer fibers GoodRoad ® II polyester fiber and GoodRoad ® II Acrylic fiber polypropylene by the comparative test. On this basis, influence law of Marshall Index and high & low temperature performances of the AC-16 asphalt mixtures which are influenced by different fiber dose and fiber type are researched. The results can provide the guidance and application value to improve the performance of asphalt pavement.
Stability Analysis on High Slope Based on Strength Reduction Method
Authors: Ge Bao Jin , Wang Lian Jun , Li Dan Feng , Li Yi
Published: January 2014

The stability analysis and evaluation on high slope is of great significance. The stability analysis on the slope of ZHANG-ZHUO highway is carried on in this paper by using the strength reduction method and ABAQUS software. According to the stress and plastic deformation calculated by ABAQUS software, the paper gives evaluations for the stability of slope. It turns out that safety factor of the slope is greater than three; the stability of the slope is well.
Analysis on Mechanical Response for Asphalt Pavement Based on Thickness Variation for Transition Layer of Graded Crushed Rock
Authors: Wei Hong Yun , Zhou Wei Feng , Sun Jian Yong
Published: January 2014

The graded crushed rock layers is set between asphalt surface course and semi-rigidity base course to effectively prevent or reduce the reflection crack of semi-rigidity base course and improve the draining condition of asphalt pavement, however, the graded crushed rock is low in modulus and is provided with nonlinearity stress-strain characteristic, and the addition of this transition layer may cause the stress variation of pavement structure. Through applying KENPAVE pavement design program, analyze the mechanical response discipline on pavement structure layer by thickness variation of graded crushed rock layer and put forward the reasonable suggestions for structural design of asphalt pavement for transition layer of graded crushed rock.
The Effect of Asphalt and Aggregate Gradation on the Low-Temperature Performance of Asphalt Mixtures for Intermediate and Underlying Course
Authors: Sun Zhao Hui , Yu Qing Bin , Wang Tie Bin , Yu Bao Yang , Zhu Guang Qiang , Ma Jing
Published: January 2014

Aiming at the asphalt mixture type used in intermediate and underlying course of high-grade highways in Northeast region of China, the research of effect of asphalt and gradation on the low-temperature performance of asphalt mixture was carried out to recommend asphalt grade and grading type which is suitable for intermediate and underlying course of high-grade highway in Northeast region of China. The results show that the asphalt and gradation of aggregate has important impact on the low-temperature performance of asphalt mixture. The low-temperature bending creep rate of Grade A No.90 asphalt mixture specimen prepared is faster than that of Grade A No.70 asphalt mixture. To further illustrate the low-temperature deformation resistance performance of Grade A No.90 asphalt is better than that of Grade A No.70.asphalt.The low-temperature bending creep rate of modified asphalt mixture of gradation GLAC-20 is greatly improved. Grade A No.90 asphalt modified is suggested to use in intermediate course, and the gradation type which is suitable for intermediate and underlying course is recommended for reference.
Influence of SBS Dosage on the Performance of Modified Asphalt
Authors: Ye Chang Yong , Yang Wan Yi , Zhang Xi , Li Wei Guang
Published: January 2014

In this paper, two base asphalt types representing two oil sources and two modifiers (linear and star-shaped) are processed. This paper discusses the relation between dosage of SBS and the characteristics of SBS modified asphalt. Modified effects related to the structure and molecular weight of SBS. The modification effect of star-shaped modifier is better but the processing performance of linear modifier is better. The index of evaluating the production quality of SBS modified asphalt is proposed and the basis of controlling the construction quality of SBS modified asphalt is provided. Through the analyses of modified asphalt with different variety and different SBS dosage in conventional experiments such as penetration, ductility, softening point and the relation between the dosage of SBS and various technical performances of SBS modified asphalt is obtained. After the modified, penetration is decreased and softening point and ductility is increased, which prolonged the service life of pavement.
Management Research on Treatment Measures for Differential Settlement of Tianjin-Binhai Expressway's Widened Subgrade
Authors: Wei Yu Guo , Zhou Wei Feng , Li Yuan Yuan
Published: January 2014

Control of differential settlement of widened subgrade is one of key pints for the quality control of expressway reconstruction and extension projects and a focus for many scholars. In the paper, the analysis model of the pavement structure stress is built based on character and design parameters of the subgrade and pavement of Tianjin-Binhai Expressway. The control standards for the subgrade and pavements differential settlement of Tianjin-Binhai Expressway are confirmed through analyzing the pavements mechanical response under different differential settlements and treatment measures are taken according to classification of different differential settlements to control the final settlement amount within the preset range, which provides references for renovation and extension projects in future.
Improvement in Design and Manufacture of Automobile Based on Ergonomics Theory
Authors: Chen Yu Zhong , Feng Yong Qin , Yin Yan , Zhang Xiao Rui
Published: January 2014

The automobile is a complex man-machine-environment system and its quality safety is extensively influenced by the ergonomic factors. In this paper, the judging criterion for the ergonomic safety factors in the automobile recall cases was proposed based on the ergonomics theory. The ergonomic factors for the design and manufacture defects of automobile were analyzed by taking the automobile recall cases in China in 2012 for example. At last, some suggestions were put forward for removing the automobile defects and improving the design and manufacture of automobiles specific to the ergonomic defects of safety belt, seats, airbag and other typical components.
Design and Experiment on Premixing Burner
Authors: Wan Yao , Wu Heng
Published: January 2014

Diesel particulate filter is an effective after-treatment technology that reduces particulate matter pollution in the diesel exhaust; however, the regeneration problem of the filter is limiting its commercialization process. This paper introduces the burning concept of premixing combustion into the burner of filter regeneration device and completes the design of premixing burner, combining the precise control of the regeneration process to achieve an effective regeneration of particulate filter, with the regeneration efficiency of 97.4%.
Research on the Methods of Accident Vehicle Safety Performance Technological Identification
Authors: Xu Hai Hua , Li Guang Fu
Published: January 2014

With the rapid development of the automobile industry and transport, the increasing traffic accidents have become the serious problems for the traffic management. The important issue that we how to deal with the traffic accidents scientifically and make an accurate identification about the traffic accidents is badly in need of solving. Based on the current situation and research methods of traffic accidents at home and abroad, this paper illustrates the research on accident vehicle safety performance technology identification from one of factors causing traffic accidents-vehicles, which makes the identification for the accident vehicles about the operation process. The selection and process of identification items and information record will be strictly controlled to make the work quality and efficiency improve greatly.
The Study on Crash Worthiness of Cab-over-Engine Medium Bus with Dummy Restrains System
Authors: Qi Hao , Chao Fang
Published: January 2014

The compositive crash model is built including dummysafety belt retrains system and the whole bus frame to research the crash worthiness of a cab-over-engine medium bus. With the crash regulations on M1 type bus, the frontal crash process is simulated. The deformations and acceleration of the parts and whole frame are analysised. For the hybridIII50 male dummy, the movement distance of dummy with safety belt and the injury values including headneckbreast and leg are solved. A comprehensive appraisement of crash worthiness is achieved.
Reliability Test of Taxis Based on Typical User Road
Authors: Wang San Xia , Zhang Lu , Zhang Chong Bo , Li Wen Liang , Zhou Wei
Published: January 2014

In order to study the fatigue reliability of taxis, a test method that correlated typical user road with proving ground reliability road is proposed. According to the result of investigation, after taking the road test on the user road, the load spectrum of taxis on the condition of typical user road is obtained. Then the rain flow counting method is used to obtain the load distribution matrixes through analyzing the two groups of data that are tested above , and with pseudo damage as a quantitative basis for the calculation of taxis fatigue damage that generated from load spectrum, an equivalent relationship is established between the two. The calculation results indicate that the ratio of damage of the typical user road to proving ground reliability road is 1 to 148.8, if regarding 600,000 km as total scrapped mileage of a taxi, 4,000 km reliability test on proving ground can achieve the same damage.
Integrated LQR Control of Automobile Anti-Rollover System and Electrical Power Steering System
Authors: Liao Cong , Wu Xin Ye , Huang Hong Wu , Fang Qiu
Published: January 2014

Based on the interference characteristics of the active suspension anti-rollover control system and electric power steering system, combining vehicle active suspension anti-rollover control system model, electric power steering system model and the steering model, the automobile system dynamic model was established. The optimal control strategy of LQR(linear quadratic regulator) was designed, and integrated control system of the anti-rollover control system and electric power steering was realized. Under Matlab/Simulink, the simulation was done and the results show that the presented control scheme can improve handiness of electric power steering system, and has a good anti-roll and anti-pitch ability.
Emission Characteristics of CNG/Gasoline Dual-Fuel Taxi
Authors: Qian Fang , Li Tie Zhu
Published: January 2014

To investigate the real emission level of compressed natural gas (CNG)/gasoline dual-fuel taxis, Portable emission measurement system (PEMS) testing techniques was applied to measure instantaneous CO2, CO, NOx and HC emissions. Comparison between CNG and gasoline was set up to analyze the influence of speed and driving modes on the gas pollutants emissions under the real-world operating conditions. Results show that the average speed of the tested taxis is 27.75 km/h and the speed has a relationship with emission level. Taxi fueled with CNG emit less CO2 and CO but more NOx and HC than taxi fueled with gasoline at all speeds below 45 km/h. CO2, CO and HC emission factor from CNG taxi were lower whilst NOx were higher, NOx emission rate of CNG taxi was higher contrast to the taxi with gasoline. The emission level of CNG taxi is better than gasoline taxi when the driving speed is low.
The Experimental and Simulation Analysis of Steel Piston Temperature Field and Deformation Based on Finite Element Method
Authors: Zhang Yi , Su Tie Xiong
Published: January 2014

The traditional aluminum piston, the can not meet the engine development to the high power density direction, so the higher strength steel piston designed. The temperature filed and deformation was calculated and analyzed by finite element method with finite element software MSC.NASTRAN. The results can provide theoretical foundation for the promotion of the all-steel piston.
Logistics Cost Control of Railway Construction Projects Based on Material Classification Management and Material Supply Plan
Authors: Li Ai Min , Wang Guo Qing , Zhang Jing Jing
Published: January 2014

To decrease the logistics cost effectively, this paper will fulfill the goal by materials supply plan management. The first step is the classifying of materials; it will find the key materials out to improve the efficiency and effectiveness of material management. Then its the material supply plan management of the key materials based on material requirement plan of railway construction.
Rent Pricing in Urban Rail Transit SBOT Projects under Uncertainties
Authors: Lv Jun Na , Liu Wei , Zou Qing
Published: January 2014

SBOT (subsidize in building-operate-transfer) as a new BOT procurement model has been adopted in the construction of urban rail transit projects in China. Rent is one of the most important variables in arranging a SBOT contract which should determined considering the dynamic uncertainty arising from the volatility of the revenue generated by the project. Considering the integrated economy and social benefits of urban rail transit project, this paper presents a rent pricing model based on real option and optimal stopping theory on urban rail transit SBOT project. It derives the investment threshold to enter a SBOT contract under certain concession period and the feasible interval for rent. Finally, an example is referred to demonstrate the effectiveness of the proposed model.
Study on Taxi Quantity Model Based on Dual-Satisfaction
Authors: Ma Jing , Jin Tao , Luo Xiao Qiang
Published: January 2014

Great changes have taken placefor urban residents in the modesof life due to the urban expansion, so the travel distance and the range are expanded. Taxi plays an important role in the transport for itspoint to point convenience.Therefore, the study on the taxi quantity model has great significance. In this paper,a multi-objective linear programming model about taxi quantity was proposed, which takes both the satisfaction of the taxi driver and passengers into account, avoiding the only consideration of the passengers drawbacks and ignore the taxi driver. It focuses on the solution of the best optimal taxi quantity based on the model of dual-satisfaction. The results of the research indicate that this model is operable and feasible.
The Waterway Service Level Research of Xijiang Waterway in Zhaoqing Area
Authors: Tan Jian , Cao Wen Lei , Zhang Wei Chun , Yang Jia Yi
Published: January 2014

The paper introduced the conception of the Waterway Service Level according to the Road Service Level to analyze waterway traffic load conditions.The Waterway Service Leve is a measure of service quality evaluation of comprehensive service and object feeling provided by the waterway subject to a service object and it can be classified into four levels according to vessel traffic flow density,vessel traffic flow speed,a one-way vessel service traffic volume,the traffic load ratio (V/C) and so on.After study,we found it's urgent to improve the waterway capacity and service level of Xijiang Waterway in Zhaoqing area,and the through capacity of the waterway has more room to improve,so we put forward some suggestions for waterway construction and sailing management.
Study on Hub-and-Spoke Organization of Container Shipping in the Yangtze River
Authors: Yu Le , Zhang Pei Lin , Guo Pan , Liu Hong Gang
Published: January 2014

As the organization of container shipping in the Yangtze River does not comply with the principle that "large ship with long line, small with short line", Hub-and-Spoke network is applied to this area to centralize traffic flow and achieve economies of scale, with the axis between Wuhan Yangluo Port and Shanghai Yangshan Port. Compared with traditional mode of transport, the new mode reduce the transport costs and fuel consumption by 15.3% and 20.1% respectively. Further, the carbon emissions are cut down by 318 thousand tons. It presents excellent economic and social benefits.
Metro Operation Safety Evaluation
Authors: Wei Li Yun , Lv Yong Bo , Ren Yuan
Published: January 2014

In order to evaluate urban rail traffic safety performance comprehensively and to find the weak link to strengthen management, this article, it used the secondary fuzzy comprehensive evaluation method for safety assessment. the qualitative analysis was done to emphasis the structure importance and management strategies are put forward based on the results.
Optimal Allocation of High-Speed Railway Mobile Equipment Based on the Passenger Flow
Authors: Zheng Qing Jie , Han Bao Ming , Li Hua
Published: January 2014

Based on the relationship between passenger flow and demand of electric multiple units (EMU), a new methodology to calculate the EMU demand and allocate the EMU is proposed, which can meet the demand of passenger as well as avoid the waste of transport capacity. An offline allocation plan of EMU is designed by analyzing the fluctuation in passenger flow, passenger average haul distance, passenger load factor and so on. Using the methodology, the EMU allocation problem is solved through program, which is used in Beijing-Shanghai High-speed Railway to obtain the EMU allocation plan.
Investigation on Entry Capacities of Single-Lane Roundabouts
Authors: Ren Liang , Qu Xiao Bo , Wang Shuai An , Guan Hong
Published: January 2014

Both heavy goods vehicles (HGV) and exiting vehicles can significantly affect the entry capacity of a roundabout. However, their effects have not been taken into account in HCM 2000 model. Recently two studies have been carried out to address this issue: 1) Dahl and Lee (2012) proposed an expectation theory based approach to incorporate the effect of HGVs [; and 2) Qu et al. (2013) derived a new roundabout capacity model by assuming that each exiting vehicle could provide one entry opportunity for waiting vehicles [. In this paper, the two models are integrated using a scenario-based approach to analyse the effects of not only exiting vehicles but also HGVs. A comparative study indicates that HCM 2000 model performs well under low to mid traffic conditions while it underestimates the capacities under high traffic conditions in combination with high proportions of exiting vehicles.
Research on Airport Site Selection Based on Triangular Fuzzy Number
Authors: Liao Yong , Bao Fen
Published: January 2014

The problem of airport site selection involves many influence factors; it belongs to multi-attribute decision-making problem. In order to solve the problem, fuzzy decision-making thesis is introduced. Firstly evaluation criteria system is established which consist of 4 first-grade criteria including execution conditions, operation conditions, operation supports, social and economic conditions. Secondly, triangular fuzzy number is introduced into representing the evaluation value of different alternatives in the decision matrix by several experts. The final evaluation value of each alterative is achieved after considering weight of each expert and weight of each criterion. In order to rank final evaluation value expressed by triangular fuzzy number, the degree of dominance between alternatives is defined by the way of difference of two triangular fuzzy numbers. The complementary judgment matrix expressed by crisp number is built up on degree of dominance between alternatives. The ordering vector of alternatives, which is eigenvector, is figured out from complementary judgment matrix. At last, a numeric example is made to demonstrate the method proposed in this paper is effective and feasible.
Construction Strategy on Low-Carbon Transportation System in New District of Lanzhou
Authors: Zhang Kun , Cai Guo Qiang
Published: January 2014

For low-carbon transportation is important to the construction in a city, as a new city, New District of Lanzhou has more advantages to construct low-carbon transportation system, compared with the completed cities. Combining with planning features of it, the article proposes some targeted measures to low-carbon transportation system construction in New District of Lanzhou, from the transverse dimensions, like software, hardware, and vertical dimensions, like inner of the district, the connection between main and new district. Result of carbon emission calculation demonstrates the importance of low-carbon transportation in New District of Lanzhou.
The Study of Road Network Capacity Based on Unblocked Reliability
Authors: Lin Gui Bao , Ma Rong Guo , Deng Han Yue , Liang Guo Hua
Published: January 2014

Recently, to keep the network unblocked becomes more and more important, because that the urban traffic has the serious congestion. The model of network capacity is demonstrated with the concept unblocked reliability and reserve capacity. The simulation results shows that actual network capacity is less than its structural capacity constrained by the network control, which gives a new perspective for the future urban network planning.
Research on the Problems of China's Railway Refrigerated Transport and Solutions
Authors: He Hong , Li De Wei
Published: January 2014

In this paper, we have analyzed on the problems existed in China's railway refrigerated transport, and have found that equipments of railway refrigerated transport are in poor conditions and have low utilization rate, the setting of freights’ transport fees is irrational, duration of the transport is long and the refrigerated transport organization is lagging behind. For the above problems, this paper have proposed to develop the railway refrigerated containers, to develop a flexible price policy, to increase the assessment efforts on the dwell time of refrigerated transport vehicles, to comply with the assessment criteria of transit time of refrigerated transport vehicles strictly and to conduct a comprehensive dynamic monitoring on railway refrigerated transport through using management information system of railway transportation to reform the refrigerated transport organization, and thereby improving the quality of railway refrigerated transport.
Optimization Model of Passenger Train Service Plan Based on the Degree of Passenger Satisfaction
Authors: Liu Pei , Han Bao Ming , Zhang Qi
Published: January 2014

The passenger train service plan which is the basis of passenger transportation organization shows how to organize passenger flow into train flow. The degree of passenger satisfaction reflects the difference between perceived service and expected service. Due to the deficiency of transportation supply, a minority of passengers have to take their "originally reluctant" trains instead of "preferred" trains. This paper firstly analyses extra passenger transportation costs in high-speed rail line. Secondly, a multiobjective optimization model of passenger train service plan based on the degree of passenger satisfaction is proposed, in which minimizing the total passenger train stop times and minimizing the extra passenger transportation costs are the two planning objectives. Finally, a case study on the Beijing-Tianjin intercity railway line shows that the model can be solved by the genetic algorithm and can achieve satisfactory results.
Influence Analysis of Cell Plate Length to Slab Track Vertical Dynamic Response
Authors: Ma Xiao Chuan , Luo Wei , Wang Ping , Guo Bao Ru
Published: January 2014

A vehicle-track-subgrade coupling vibration system model was proposed to analysis the influence of cell plate length to slab track vertical dynamic response. The model was built with finite element method, rail was modeled as space beam element, both track plate and base plate were modeled as shell element, the vertical connections between rail, slab and subgrade were modeled as spring-damper element. The results show that with the cell plate length increases, the vertical vibration displacement of rail, track plate and base plate have decreasing tendency; the vertical vibration acceleration of rail has increasing tendency; the vertical vibration acceleration of track plate and base plate have decreasing tendency.
Evaluation of Ship-Diversion Induced Emergency on Port Traffic Volumes
Authors: Tang Guo Lei , Zhang Ran , Wang Wen Yuan , Guo Zi Jian
Published: January 2014

The worst ice blockages along the Yellow Sea coast and Bohai Sea had severe effects on maritime shipping, oil and gas mining and farming activities in the winter of 2009 and 2010. Ice blockages made some small ships divert to neighboring ports, which also affected these ports' operations. To evaluate the effect of ship-diversion induced emergency on port traffic, we propose a simulation model considering ship-diversion induced emergency, port transportation and operations. Then we carry out simulation experiments on a container terminal in Dalian Port. The experiment results show that ship-diversion induced emergency increased the peak hourly traffic volume, average daily traffic and thirtieth hourly volume, which provides a basis for port traffic planning and organization.
Research on Passenger's Choice Behavior Based on Beijing-Guangzhou High-Speed Railway Ticket Data
Authors: Zou Yu Ting , Nie Lei
Published: January 2014

This paper has analyzed passenger flows' characteristics of Beijing-Guangzhou high-speed railway based on the ticket data of 2013 January, including passengers' distribution on the ranges of trip distance and passengers' composition in each range. Furthermore, it concentrated on analyzing preferences on passenger's choice behavior among the passengers of different OD pairs and the difference between weekday and weekend on passenger's behavior. The result shows short journey passenger had lower sensitivities on ticket price and travel speed, the selection of passengers from low-level node to high-level node on departure time had obvious clustering effect. With the increase of trip distance, the sensitivities of passengers on ticket price, travel speed and originating train would increase correspondingly. The paper's conclusion has referential meaning for researches on the optimization of high-speed railway transport organization.
Research on Uncertain Network Design Problem
Authors: Wang Yang , Cao Jin Xin , Wang Ri Dong , Li Xia Xi
Published: January 2014

In this study, a kind of uncertain network design problem, network design problem under uncertain construction cost, is researched.The discrete network design problem under uncertain construction costs deals with the selection of links to be added to the existing network, so as to minimize the total travel costs in the network. It is assumed that the value of the demand between each pair of origin and destination is a constant and the construction costs of each potential link addition follow a certain stochastic distribution. In this paper, a bi-level and stochastic programming model for the discrete network design problem is proposed. The construction costs of potential links are assumed as random variables and mutually independent with each other in this model. The upper-level model is a chance constrain model with the objective function of minimizing the total travel costs in the network, and the lower-level model is a user equilibrium model. The stochastic model is then transformed into a deterministic one. A branch-and-bound solution algorithm is designed to solve the deterministic model in an efficient way. At last, a computational experiment is conducted to illustrate the effectiveness and efficiency of the approach proposed in this paper. The results show that the stochastic model is more flexible and practical compared with the deterministic one.
High-Speed Railway Passenger Node Classification Method and Train Stops Scheme
Authors: Zhou Peng Fei , Han Bao Ming , Zhang Qi
Published: January 2014

The development of high-speed railway has been very fast, while there are still existing many problems to be further studied and discussed, especially the design of high-speed railway Train stops program. The research of classification of high-speed passenger railway nodes has a vital significance for forecast of high-speed railway passenger flow, passenger train operation plan, evaluation and optimization and so on, especially for highspeed railway stopping schedule .This paper analyzes the significance and methods of high-speed passenger railway nodes classification, and designs high-speed rail train line stops program based on the classification. Finally, analyzing the case on the basis of Beijing-Guangzhou high-speed railway, a train stops program will be made bases on the classification of Beijing-Guangzhou high-speed railway passenger transport nodes to verify the feasibility of this study.
Research on Post Evaluation System of Scenic Highway and Quantitative Evaluation with Interval Approximation Method
Authors: Yuan Chun Yi , Li Wen Yu , Zhao Le Yi
Published: January 2014

To promote the demonstration and guidance effect of scenic highway with the project post evaluation, this paper studied the concept of harmony scenic highway and built a Scenic Highway harmony evaluation system which takes highway road area harmony, human road harmony and highway external environmental harmony as core indexes. Scenic highway harmony evaluation method based on interval approximation was adopted to post evaluate typical demonstration scenic highway in Hebei. The practicability of the scenic highway harmony evaluation method based on interval approximation was verified.
The Research on the System of Level of Service of the City Commercial Pedestrian Street
Authors: Meng Jia Qi , Zhu Zhen Jun , Zeng Jun
Published: January 2014

The commercial pedestrian street, which serves as an important part of the city sidewalks, is famous for combining commerce and entertainment. Based on the presence of two typical commercial pedestrian streets in Xi’an city, the research makes a study on the commercial pedestrian street by quantitative analysis. The essential data derives from the questionnaire surveys on the presence of cross-section, characteristics of pedestrian, obstacles, presence of related facilities in the commercial pedestrian streets, and some other factors. Then through SPSS software, the main factors are selected from the data. With the help of previous work, the research proposes the regression model of evaluating the level of service (LOS) of streets. Finally, this research uses the model to finish evaluating the level of service of a commercial pedestrian street Luomashi in Xi’an, which shows that the model has performed well during the process.
Study on Multi-Objective Greenness Planning Model for Liners
Authors: Qi Jun , Wang Li Zheng , Su Shao Juan
Published: January 2014

According to the characteristics of high-speed liners, the multi-objective scheduling optimization mathematical model of high speed liners is established from the greenness angle. And the quantitative indicators and qualitative indicators were organic combined. The integer linear programming method was adopted to optimize analysis. Finally verify the feasibility of this optimal dispatch model through an example. Thus a scientific, reasonable way is provided for the high-speed liners scheduling arrangement.
Maintenance Management and Analysis of Highway Tunnel Electromechanical System
Authors: Jia Xu , Fang Zheng Peng , Wang Cheng
Published: January 2014

The accident is occurred more easily in the tunnel section and the accident in the tunnel is difficult to deal with. In order to reduce the accidents in the highway tunnel, ensure the normal running of the mechanical and electrical system is very significant. Completing mechanical and electrical maintenance and strengthening the construction of tunnel electromechanical is one of the important way to reduce accidents. This paper first introduces the components of tunnel electromechanical system, then introduces the development situation and maintenance of tunnel electromechanical system, finally the daily maintenance and management is presented.
A Clustering Algorithm Applying to Transportation Market Segment
Authors: jing Chong Yi , Sun Hong , Zhang Pei Wen
Published: January 2014

An integration algorithm for clustering is presented, in which a maximization & minimum algorithm to determine the initial centers and BWP (Between-Within Proportion) index for input of optimal k. In theory, the bigger the BWP index, the better the clustering effectiveness. Then a numerical example of air transport market segment is presented to show the effectiveness and efficiency of the method presented in the document.
Thai Consumers Satisfaction after Receiving Services from Thailand's Newest Low-Cost Airline
Authors: Charoensettasilp Sittichai , Wu Chong
Published: January 2014

Thai Thai Smile is Thailands Newest Low Cost Airline Launched in 2012. The demand for low-cost airlines in the Thailand has also needs more and growing fast. This research studies about Thai consumers satisfaction after receiving services from Thailand's newest low cost airline. Employs sampling method on 400 Thai people who live in Bangkok and have used Newest Low Cost Airline to travel. A random convenience sampling technique together with surveys is used to collect data. At a significance level of 0.05, demographic factors including gender, age, education, monthly income, and occupation do affect Thai consumers satisfaction after receiving services from Thailand's newest low cost airline. In addition to the service marketing mix (7PS) influence Thai consumers satisfaction after receiving services from Thailand's newest low cost airline. Product, Process, People and Physical Evidence mostly affect Thai consumers satisfaction after receiving services from Thailand's newest low cost airline. Examples are the convenience of luggage claim, The announcement and information from the cabin crews and the captain, and the aircraft used for the traveler with a new and modern design that convenient to use. Following by Place and Price respectively, while Promotion is among the bottom ranking.
Urban Congestion Pricing: Practices and Future Development
Authors: Liu Zhi Yuan , Wang Ting Song , Qu Xiao Bo , Yan Ya Dan
Published: January 2014

This paper addresses the practical implementations of congestion pricing schemes adopted in urban cities for mitigating traffic congestions. A review is first provided for the practices of congestion pricing schemes established globally, which include the area licensing charge and pay-per-entry charge. Then, the methods for toll rate determination are presented. To promote the use of congestion pricing schemes, some views are finally proposed for their future development, including the distance-based charge and strategies for improving its public acceptance.
Research on Hainan East Ring Railway Passenger Market Segmentation Based on Customer Loyalty
Authors: Jiang Ya Nan , Zhao Yu
Published: January 2014

This document describes the relationship between customer loyalty through the establishment of quantitative structure model, and uses the method of cluster analysis to classify the Hainan east ring railway market, finally puts forward the related strategies.