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Abstract

This study creates an adaptive data fusion procedure to represent the sequential forecast of accident duration. This procedure includes two Artificial Neural Network-based models. Model A is used to forecast the duration time at the instant of accident notification while ...Lead moreThis study creates an adaptive data fusion procedure to represent the sequential forecast of accident duration. This procedure includes two Artificial Neural Network-based models. Model A is used to forecast the duration time at the instant of accident notification while Model B provides sequential updates of duration time after the moment of accident notification. These two models together provide a sequential forecast of accident duration from the accident notification to the accident site clearance. With these two models, the estimated duration time can be provided by plugging in relevant traffic data as soon as an accident is notified.To select data feature, Genetic Algorithm can decreases the number of model inputs and preserves the relevant traffic characteristics with fewer inputs. This study shows proposed models are feasible ones in the Intelligent Transportation Systems (ITS) context.

Abstract

The total amount of vehicles used on the highway has increased continuously due to the sudden increase in the number of vehicle possession. The level of service demand by customers has beengradually increased along with the resolution of traffic delay and congestion in to...Lead moreThe total amount of vehicles used on the highway has increased continuously due to the sudden increase in the number of vehicle possession. The level of service demand by customers has beengradually increased along with the resolution of traffic delay and congestion in tollgate and the diversity of toll payment method. Korea Highway Corporation introduced the ETCS and was successful in its expanded establishment in the national level. The effect analysis of existing highways that currently introduced the Hi-Pass system focused on the reduction in waiting time not with highway network, but in individual business offices; however, it would be also necessary to analyze the effects in terms of the highway network such as Seoul Circular Highway Line. Through the effect analysis using the network analysis system, the study attempted to establish the effect analysis of Hi-Pass system that would be expanded and established in the national level in the future.

Abstract

The purpose of this study is to introduce the development of the Korean hardware-in-loop simulation system(HILS) for a new traffic control system evaluation. The newly developed HILS system is directly connected to the simulation model, and it can be used to evaluate the ...Lead moreThe purpose of this study is to introduce the development of the Korean hardware-in-loop simulation system(HILS) for a new traffic control system evaluation. The newly developed HILS system is directly connected to the simulation model, and it can be used to evaluate the device or the system through the reciprocal interchange of control data. To verify the reliability of the HILS system, the accuracy of generation and transfer of the detector data between the simulation model and the traffic signal was evaluated using mean absolute error, equality coefficient, and t-test. The test results showed a statistically significant accuracy within a range of 95% reliability level.

Abstract

The degree of saturation in real-time traffic signal control system indicates the current traffic condition quantitatively and it is a crucial variable needed for calculating traffic control parameters. The degree of saturation should show a stable pattern under the satur...Lead moreThe degree of saturation in real-time traffic signal control system indicates the current traffic condition quantitatively and it is a crucial variable needed for calculating traffic control parameters. The degree of saturation should show a stable pattern under the saturated and oversaturated traffic conditions, but it frequently shows an unstable distribution. To overcome this limitation, this study investigates two alternatives on the premise that the saturated non-occupancy measured in the cycle applied directly without smoothing. Test results indicate that the accuracy of the degree of saturation estimates can be improved by considering abnormal traffic data during the estimation process.

Abstract

Although Intelligent Transportation System(ITS) is considered as the largest industry in 21 century, It is in the primary stage of industry development in China. In industry, It is common that the developer and producer of ITS products, the user of ITS products and govern...Lead moreAlthough Intelligent Transportation System(ITS) is considered as the largest industry in 21 century, It is in the primary stage of industry development in China. In industry, It is common that the developer and producer of ITS products, the user of ITS products and government and enterprise related to ITS, are separated and not integrated well. This paper analyzed the basic structure of ITS Industry chain of China firstly. Secondly, the value creating activity in ITS industry was analyzed by applying the concept of value chain to the whole industry. Finally, The integration and management methods of ITS industry chain in China was advanced combined with the current characteristics of industry and competition. The study in this paper provided an effective method to exchange and assign resources in ITS industry and optimize and harmonize value activity, so that the general largest value and advance industry competition ability are available.

Abstract

The standard of judging the congestion in FTMS, which were built at home, is judging by equally setting up the critical speed value with 2 stages in the speed value by each system, to the whole sections in which a system was built. However, this critical speed value needs...Lead moreThe standard of judging the congestion in FTMS, which were built at home, is judging by equally setting up the critical speed value with 2 stages in the speed value by each system, to the whole sections in which a system was built. However, this critical speed value needs to be adjusted differently depending on the averagely driving speed in the past, a road condition, the consciousness in a user of the road, and the characteristic by section in each road. Accordingly, this study was calculated the critical speed which divides the traffic conditions depending on the characteristic by main congestion section in FTMS for Seoul Urban freeway, through the Break-point Analysis in the degree of scattering for the basic relationship of Volume-Speed. And, it elicited the conclusion that there is great difference between the speed value in the standard of judging congestion depending on the characteristic by each section, and the critical speed that was basically established.

Abstract

City public traffic is an essential trip means linked with a large people's crowd. Preferential developing public trafficA multi-agent CPTIDMS (City Public Traffic Information and Dispatching Management System) design frame is discussed according to china city character, ...Lead moreCity public traffic is an essential trip means linked with a large people's crowd. Preferential developing public trafficA multi-agent CPTIDMS (City Public Traffic Information and Dispatching Management System) design frame is discussed according to china city character, researched on overseas or internal public transportation characteristics concerning information collection, proclamation, dispatching. Some system analysis and design is carried on relating to public traffic information collection and proclamation, traffic forecasting, optimizing and dispatching based on VAO (Vehicle Automatic Orientation) and service evaluation etc. Above measures are propitious to achieve CPTIDMS project purpose. The research has prove that this multi-agent CPTIDMS have some characteristics as adapting complicated operation condition, DDSS(distributed decision-making supporting system), better expansibility, better exoteric and so on. This research is beneficial to apply MAS to other traffic aspects.

Abstract

This paper demonstrates the preliminary results for field application of signal control algorithms in developing new concept of traffic signal control system, which is titled Wireless Interface Signal control system for Dynamic and Optimal Management (WISDOM). WISDOM, one...Lead moreThis paper demonstrates the preliminary results for field application of signal control algorithms in developing new concept of traffic signal control system, which is titled Wireless Interface Signal control system for Dynamic and Optimal Management (WISDOM). WISDOM, one of the national transportation technology development projects funded by the Ministry of Construction and Transportation (MOCT) is operated with real-time individual vehicle information from wireless communications among the signal controller, vehicles, and traffic detection systems. The hardware in the loop simulation system (HILSS) which has widely been utilized in evaluating system performance of traffic signal controllers was modified and improved to test few signal control algorithms proposed in this project for the development of WISDOM.

Abstract

Environmental Road Pricing was introduced into the Metropolitan Expressway in 2001 by utilizing the free flow ETC system. Tolls, which are set uniform for each area of the Expressway network today, are scheduled to be charged based on the distance of travel by introducing...Lead moreEnvironmental Road Pricing was introduced into the Metropolitan Expressway in 2001 by utilizing the free flow ETC system. Tolls, which are set uniform for each area of the Expressway network today, are scheduled to be charged based on the distance of travel by introducing a free flow ETC system. In such a system, the radio communication between the ETC at the entrance to the expressway and that at the exit must function properly, requiring power to be stably supplied to the ETC equipment. This paper describes methods for managing the power source equipment of ETC, which involves risk management that encompasses the effects and range of abnormal traffic volumes and power cuts.

Abstract

Recently, the wireless communication infrastructure has been rapidly constructed with the greatly growing demands of various mobile services. A new adaptive traffic signal control system, Wireless Interface Signal control system for Dynamic and Optimal Management (WISDOM)...Lead moreRecently, the wireless communication infrastructure has been rapidly constructed with the greatly growing demands of various mobile services. A new adaptive traffic signal control system, Wireless Interface Signal control system for Dynamic and Optimal Management (WISDOM), based on wireless communications among the signal controller, vehicles, and traffic detection systems has been under development by the Ministry of Construction and Transportation (MOCT). Currently, several algorithms being appropriate in controlling traffic signals with wireless communication detection systems are integrated in the system. One of important issues is how to establish and manage integrated database system for properly operating the WISDOM algorithms. Hence, this paper proposes functional requirements and structure of integrated database system of the WISDOM.

Abstract

This paper investigates the safety factors and related parameters on lane change decision aid system (LCDAS) for establishing safety regulations based on the international standard. This study has been conducted under a national ITS project which develops test and evaluat...Lead moreThis paper investigates the safety factors and related parameters on lane change decision aid system (LCDAS) for establishing safety regulations based on the international standard. This study has been conducted under a national ITS project which develops test and evaluation technologies for advanced safety vehicle (ASV) in establishing safety standards and/or regulations funded by the Ministry of Construction and Transportation (MOCT). The safety parameters presented in this study include the operational requirements with subject vehicle speed, target vehicle speed, target vehicle location, warning issue points of blind spot and closing vehicle for LCDAS running safely on the highway. Findings of the field test conditions according to the predefined test scenarios are analyzed in order to provide the operational requirements on the national safety regulations for LCDAS.

Abstract

The demand for the safety is increased in the telematics field. The main reason for the car accident is delayed recognition of drivers about danger. That is about 45% car crash comes from delayed decision making. In order to solve the safety problem, we propose the wirele...Lead moreThe demand for the safety is increased in the telematics field. The main reason for the car accident is delayed recognition of drivers about danger. That is about 45% car crash comes from delayed decision making. In order to solve the safety problem, we propose the wireless sensor system which can reduce the danger by warning invisible and unexpected risk in advance. In due consideration of environment which our system is deployed, our wireless sensor system for safety is composed of wireless sensor node sensing car existence with magnetic sensors, wireless sink node relaying the sensed data to the main server, and base station which is main server gathering all sensed data from sensor node and generating alarm messages. It is expected that our system can be helpful to reduce car accident with wireless sensor network technology.

Abstract

VicRoads, the State road authority for the Australian State of Victoria, has recently implemented a successful ‘live’ trial of Extra Low Voltage (ELV) traffic signals. With over 3,000 traffic signal sites in Victoria, efficiency improvements, such as the use of ELV, have ...Lead moreVicRoads, the State road authority for the Australian State of Victoria, has recently implemented a successful ‘live’ trial of Extra Low Voltage (ELV) traffic signals. With over 3,000 traffic signal sites in Victoria, efficiency improvements, such as the use of ELV, have the potential to contribute significant community benefits. Traffic signal installations have traditionally operated using 240 volt AC. However, the introduction of LED traffic signal lanterns has made it possible to use ELV. The ELV traffic signals operate on 48 volt AC power. To date, the high power consumption of incandescent and quartz halogen traffic signal lamps has prohibited the use of lower voltages. The major benefit of extra low voltage traffic signals is that it uses a much safer voltage that will substantially reduce any potential electrical hazards for both working technicians and the public. This paper describes both the on site installation process and the 18 months of development and testing b

Abstract

This paper makes the technical comparison between China DSRC standards and CEN DSRC standards in ETC application, it does the analysis mainly in four sections: physical layer, data link layer, application layer and device application criterion. And it comes to the conclus...Lead moreThis paper makes the technical comparison between China DSRC standards and CEN DSRC standards in ETC application, it does the analysis mainly in four sections: physical layer, data link layer, application layer and device application criterion. And it comes to the conclusion that China DSRC standards suit the ETC application environment of China much more.

Abstract

The Sustainable ITS Project at the University of Tokyo has developed the universal driving simulator for human, vehicle, and traffic research. This can be used for research involving ITS, vehicle development, and evaluation including human factors of driving in traffic. T...Lead moreThe Sustainable ITS Project at the University of Tokyo has developed the universal driving simulator for human, vehicle, and traffic research. This can be used for research involving ITS, vehicle development, and evaluation including human factors of driving in traffic. This can be connected to a macroscopic and microscopic traffic simulation system called"KAKUMO. KAKUMO can generate virtual traffic in the simulator scenario in real time, with up to 100 surrounding vehicles created and controlled independently.The pilot experiment for evaluation of the driving simulator with the traffic simulation component has been done before. We confirmed that a pilot experiment to make sure the experimental equipment and procedures were working effectively and efficiently. So, to obtain various data, the experiments with subjects from the general population were conducted. In this paper, details of the evaluation and experimental data will be shown, and the effectiveness of use of the Universal Dri

Abstract

Japan has been working to create the next-generation road system called SMARTWAY that will utilize advanced ITS technologies to provide diverse road transportation services. The National Institute for Land and Infrastructure Management of the Ministry of Land, Infrastruct...Lead moreJapan has been working to create the next-generation road system called SMARTWAY that will utilize advanced ITS technologies to provide diverse road transportation services. The National Institute for Land and Infrastructure Management of the Ministry of Land, Infrastructure and Transport has conducted a joint research with 23 private companies on the next-generation road service provision system based on advanced ITS technologies. The institute has then presented the achievements of the research to the public by carrying out an event “SMARTWAY Demo 2006” in February 2006. This report describes public road tests on the Metropolitan Expressway network in Tokyo scheduled in the spring of 2007, and subsequent opening of real operations of the SMARTWAY road services in the fall of 2007.

Abstract

A bus location system performs real time collection of the positions of buses by GPS put in the bus, and bus system operators use this information to manage its operations and provide customers with the positions of buses, expected arrival times and other information. Thi...Lead moreA bus location system performs real time collection of the positions of buses by GPS put in the bus, and bus system operators use this information to manage its operations and provide customers with the positions of buses, expected arrival times and other information. This field operation test was undertaken to construct a new express bus location system that utilizes a 5.8GHz DSRC (Dedicated Short Range Communication) system linking roadside wireless devices installed on expressways with ITS on-board units installed on express buses. It was confirmed that the use of this system contributes to the improvement of road management, traffic control and the reduction of costs for collecting information. This report describes the progress of a field operation test in Kyushu in Japan and plans for future development of this system.

Abstract

The present research is intended to reduce the number of crossing collisions that occur at unsignalized intersections. It examines two approaches to safety-related cruise-assist services for that purpose. One implements static information provision using map information i...Lead moreThe present research is intended to reduce the number of crossing collisions that occur at unsignalized intersections. It examines two approaches to safety-related cruise-assist services for that purpose. One implements static information provision using map information in on-board equipment. The other implements dynamic information provision combines vehicle detection sensors with road-to-vehicle communications. This research examines methods for realizing safety-related cruise-assist services using both of these approaches. This paper describes a study of the causal factors in crossing collision accidents that was performed for the purpose of clarifying the effectiveness and feasibility of measures for reducing these accidents. To that end, the behavior of vehicles and drivers that were involved in near misses involving crossing collisions was observed in a driving simulator as well as in actual intersections. That behavior was further compared with the behavior of vehicles in ordin

Abstract

A method was devised for using the ETC-ID system in event detection for the service for provision of information on forward obstacles, and the method was subjected to proving tests on actual roads. The ETC-ID system uplinks the ID from electronic toll collection (ETC) on-...Lead moreA method was devised for using the ETC-ID system in event detection for the service for provision of information on forward obstacles, and the method was subjected to proving tests on actual roads. The ETC-ID system uplinks the ID from electronic toll collection (ETC) on-board units and makes use of that information to detect events. This paper reports on the system configuration of the service for provision of information on forward obstacles that uses the ETC-ID system, the substance of the proving tests, and results from the proving tests. (Testing is scheduled to be carried out in February 2007.)

Abstract

Using Intelligent Transport Systems at the Olympic Games.The Sydney 2000 Olympic Games was an exciting time for Australia, an opportunity to showcase Australia to the world and host athletes proudly representing their countries.The Olympic Family, including athletes, supp...Lead moreUsing Intelligent Transport Systems at the Olympic Games.The Sydney 2000 Olympic Games was an exciting time for Australia, an opportunity to showcase Australia to the world and host athletes proudly representing their countries.The Olympic Family, including athletes, support crews, media, VIP’s, guests, games personnel, visitors and volunteers were all part of a complex logistics program; the movement of people.Behind the scenes, the daily trip movements of athletes, support personnel, media, dignitaries, officials and VIP’s were coordinated by an optimisation system that analysed every aspect of the planned trips.The use of such systems at Beijing 2008 presents new challenges. Beijing 2008 will have the highest number of athletes, support personnel, dignitaries, VIP’s, officials, media, guests, volunteers and visitors of any Olympic Games ever held.How will ITS technology plan and execute the daily trips required by so many people?

Abstract

Compared with a four-leg roundabout, weaving of traffic on a five-leg roundabout is more severe, and storage capacity of circulatory roadway is much less, blockage occurs more frequently. The research is focused on signal control method of a five-leg roundabout, and puts ...Lead moreCompared with a four-leg roundabout, weaving of traffic on a five-leg roundabout is more severe, and storage capacity of circulatory roadway is much less, blockage occurs more frequently. The research is focused on signal control method of a five-leg roundabout, and puts forward an optimization model for the signal control parameters which takes into consideration the complexity of signal phasing and complicated coordination of traffic on each approach with traffic on circulatory roadway and the constraint of storage capacity of circulatory roadway. An example is used to verify the optimization method, and further evaluated by VISSIM. The evaluation result shows the promise of the signal control method.

Abstract

This paper proposes a design scheme of maritime integrated surveillance system, which combines electronic chart technology and video monitoring technology in the same operating platform to establish an integrated surveillance system for maritime traffic and security, in o...Lead moreThis paper proposes a design scheme of maritime integrated surveillance system, which combines electronic chart technology and video monitoring technology in the same operating platform to establish an integrated surveillance system for maritime traffic and security, in order to improve the work efficiency and management level of maritime institutions. The overall system architecture and key technologies are introduced; the operating principle, process and realization of modules are described in detail.

Abstract

The Integrated Information Platform (IIP) is the core of the information sharing, exchanging in the city intelligent public bus operation management system. This paper advanced the functions of the IIP, according to the requirement of the city intelligent public bus opera...Lead moreThe Integrated Information Platform (IIP) is the core of the information sharing, exchanging in the city intelligent public bus operation management system. This paper advanced the functions of the IIP, according to the requirement of the city intelligent public bus operation management system. With the guidance of the functions, the system structure, including logical structure and physical structure, was promoted and studied deeply. The IIP was developed by using VC++6.0 and applied in the intelligent public bus operation management simulation system. The simulation result shows that the structure can realize the information sharing, information exchanging among the various subsystems effectively.

Abstract

This paper talks about the current freight task situation in Australia and how the application of currently existing innovative satellite based transport solutions can help to master the future challenges for the Australian freight industry.This paper talks about the current freight task situation in Australia and how the application of currently existing innovative satellite based transport solutions can help to master the future challenges for the Australian freight industry.

Abstract

Intelligent Transport Systems (ITS) has come to China more than 10 years. The identification and measurement of benefits and costs are critical areas of investigation that influence the government and industry investment for ITS development and implementation. A non-tradi...Lead moreIntelligent Transport Systems (ITS) has come to China more than 10 years. The identification and measurement of benefits and costs are critical areas of investigation that influence the government and industry investment for ITS development and implementation. A non-traditional evaluation framework has been established for China ITS implementation project. This framework is a knowledge management system based on China ITS projects benefit-cost database, also including research, evaluation, investigation and case study reports. This knowledge management system has been set up followed the China National ITS Architecture. Users, including researchers, officers and investors, could see China ITS framework and find benefits and costs according to service areas, physical system, region, construction period, as well as beneficial area. Also the comprehensive value of the ITS integrated system could be gotten from the framework.

Abstract

In this paper, we propose a new positioning method using the radio waves propagated from a transmitter carried by pedestrians in blind area. The intensity values of radio wave received by antennas which are mounted on front and rear side of a vehicle are measured and comp...Lead moreIn this paper, we propose a new positioning method using the radio waves propagated from a transmitter carried by pedestrians in blind area. The intensity values of radio wave received by antennas which are mounted on front and rear side of a vehicle are measured and compared in the proposed method. By comparing the two values, whether the pedestrian exist in frontward or in backward of the vehicle can be estimated. Availability of the method is demonstrated by measurement experiment with actual vehicle on a road.

Abstract

GIS enabled methodology is developed for fault detection and condition assessment in bridges . The advanced technology developing with sensors, cable / wireless communication system , reciprocators , receiver and control systems are the different devices proposed to coord...Lead moreGIS enabled methodology is developed for fault detection and condition assessment in bridges . The advanced technology developing with sensors, cable / wireless communication system , reciprocators , receiver and control systems are the different devices proposed to coordinate for generating an architecture to meet the objective of study like bridge condition assessment and monitoring of traffic loading. This paper is conceptually designed for meeting the online monitoring, unmanned communication and reciprocative system – a user friendly system of advanced technology.

Abstract

An online monitoring and reciprocative system for effective traffic mobility and safety has been suggested through the Dynamic GIS concept. This approach can scientifically view the improvement of accountability of road users under mixed traffic conditions, assessment of ...Lead moreAn online monitoring and reciprocative system for effective traffic mobility and safety has been suggested through the Dynamic GIS concept. This approach can scientifically view the improvement of accountability of road users under mixed traffic conditions, assessment of impact of illegal parking, irregular land use and irregularities in road geometrics and network.

Abstract

The Yazaki-provided in-vehicle telematics terminal (hereafter called “telematics terminal”) is a device that is designed to obtain data (including a speed sensor signal) from a vehicle and use a built-in communication module (for wide area communication) to transmit drivi...Lead moreThe Yazaki-provided in-vehicle telematics terminal (hereafter called “telematics terminal”) is a device that is designed to obtain data (including a speed sensor signal) from a vehicle and use a built-in communication module (for wide area communication) to transmit driving data and GPS data to the Yazaki APS (Application Service Provider). With the widespread use of the ETC system, Yazaki will utilize the telematics terminal and ETC system in combination, and introduce commercial vehicle-specific equipment that is intended to provide safe and fuel-efficient driving support in a timely fashion.

Abstract

The traffic jam occurrence rate for tollgates on toll roads such as urban expressways is the highest at 30%, and is a large factor in urban environmental problems. At present, an ITS called ETC (automatic toll payment system) is being adopted at those tollgates in Japan, ...Lead moreThe traffic jam occurrence rate for tollgates on toll roads such as urban expressways is the highest at 30%, and is a large factor in urban environmental problems. At present, an ITS called ETC (automatic toll payment system) is being adopted at those tollgates in Japan, and this is helping to alleviate traffic jams. In this research, the flow of traffic at a tollgate using the ETC adopted for large urban expressways was reproduced using a traffic flow simulation, and this was used to vary factors such as position, quantity and usage rate, and verify what kind of differences there are regarding the traffic situation, and whether traffic jams are alleviated. As actual data, the study looked at tollgates on the Higashi-Osaka Route of the Hanshin Expressway in the Osaka region, analyzed the actual situation, and considered ideas for improvement.

Abstract

Because many of traffic accidents occur in intersections, it is necessary to examine the driver behavior in intersections. Drive recorder which can record view image and motion data of vehicle is considered as useful tool for investigating driver behavior in dangerous sit...Lead moreBecause many of traffic accidents occur in intersections, it is necessary to examine the driver behavior in intersections. Drive recorder which can record view image and motion data of vehicle is considered as useful tool for investigating driver behavior in dangerous situation. In this paper, using the drive recorder, many data including sudden braking incident during yellow signal of intersections have been collected. Throughout the experiment from summer to winter, sudden braking incident at stop-line of intersection are compared to the dilemma zone. By the influence of snowy road surface, the dilemma zone is theoretically enlarged, and it induces more dangerous situations. However, the influence has not yet been systematically clarified by experiment. In this research, the experimental results show that the area of incident distribution coincides with dilemma zone, and it becomes larger in low friction road condition.

Abstract

Large scale events, e.g. FIFA World Cup or Olympic Games, have high demand for fleet and traffic management solutions. As navigation services (on-trip and pre-trip) are nowadays widely accepted by private consumers and fleet operators, there is the chance to combine publi...Lead moreLarge scale events, e.g. FIFA World Cup or Olympic Games, have high demand for fleet and traffic management solutions. As navigation services (on-trip and pre-trip) are nowadays widely accepted by private consumers and fleet operators, there is the chance to combine public objectives of traffic guidance with those of private event management, e.g. park guidance strategies. To fulfill such objective, it is recommended to complete classical traffic control with mobile traffic detection known as Floating Car Data. For the FIFA world cup 2006 the local authorities in Hanover (Germany) decided to contract a consortium to fulfill this task and to increase the coverage of classical traffic detection by GPS/GSM equipped Floating Cars in order to guarantee maximum transport quality for VIP’s and visitors. In this paper results of such project and other traffic management actions taken in Hanover will be presented, i.e. the positive effect of the integrated approach using classical and mobile t

Abstract

Developments of urban traffic industry have great impacts on the effectiveness of bus operation. Buses face the challenge of competing with other transport modes such as car, taxi, etc in a multimode traffic system. The existing bus schedules consist of departure and arri...Lead moreDevelopments of urban traffic industry have great impacts on the effectiveness of bus operation. Buses face the challenge of competing with other transport modes such as car, taxi, etc in a multimode traffic system. The existing bus schedules consist of departure and arrival time at main stations on the urban road network. However, they did not consider the delay as buses stop at main stations. A detailed timetable, on the other hand, consists of the departure and arrival times of its line route, always could not overcome the delay resulted from other traffic modes. In this paper, a new integer programming(IP) formulation for bus scheduling problem based on a space-time network is developed; at the same time, a new method to coordinate bus scheduling operation with an attempt to reduce travel times of public transit vehicles is proposed. Our approach includes some realistic constraints that have not been previously considered as well as all the assumptions and practical issues consider

Abstract

Recently, the research of traffic information processing and forecasting technology based on float car data has become more and more popular in the field of ITS. However, it’s impossible to calculate real traffic information for all the roads within a large geographic are...Lead moreRecently, the research of traffic information processing and forecasting technology based on float car data has become more and more popular in the field of ITS. However, it’s impossible to calculate real traffic information for all the roads within a large geographic area using float car data alone, because of the limitation of the quantity of float car and the interval of GPS. The insufficient of information will be a barrier of the large-scale application of float car system, which has not been solved perfectly until now. In this paper, two real-time information repair algorithms are proposed. By using the information from other roads or from other periods of time, these algorithms can estimate the information of the roads which have not been covered so as to effectively enhance the application value of float car system.

Abstract

A new generation unified toll collection has been researched in china, based on a system combine GPS with wireless access and DSRC. It is able to record the mileage and position of vehicle, and take account of other factors such as number of axles, let level, type of road...Lead moreA new generation unified toll collection has been researched in china, based on a system combine GPS with wireless access and DSRC. It is able to record the mileage and position of vehicle, and take account of other factors such as number of axles, let level, type of road and jam degree and so on to calculate the toll automatically. This new system will be designed and tested in next 5 years.

Abstract

The purpose of this paper is to introduce a microscopic simulation model for guidelines of the traffic access and impact study to consider stochastic, visual, and network-based traffic flow conditions. Furthermore, an economic efficiency assessment considering operation c...Lead moreThe purpose of this paper is to introduce a microscopic simulation model for guidelines of the traffic access and impact study to consider stochastic, visual, and network-based traffic flow conditions. Furthermore, an economic efficiency assessment considering operation cost, time cost, accident cost and pollution cost is carried out, which have not taken into account on previous guidelines yet in Korea.

Abstract

In China, widely-spread research and long-distance experiment of CyberCar is rarely seen. This paper introduces a CyberCar (JLUIV-5) that is made by Intelligent Vehicle Group of Jilin University. Based on machine vision, it can navigate along straight /arc lane, accelerat...Lead moreIn China, widely-spread research and long-distance experiment of CyberCar is rarely seen. This paper introduces a CyberCar (JLUIV-5) that is made by Intelligent Vehicle Group of Jilin University. Based on machine vision, it can navigate along straight /arc lane, accelerate/decelerate and stop automatically under outdoor complicated circumstances. And many experiments have proved the stability of the system. Otherwise, this paper proposes a new navigation method based on the recognition of road natural edge. Zernike moments and Hough transform are used to locate the road edge in this paper.

Abstract

This paper summarizes some problems of the traffic detector data collected on the second and the third ring roads of Beijing after a careful analysis on the characteristics of them. Then in order to solve these problems and acquire more effective data, the techniques to p...Lead moreThis paper summarizes some problems of the traffic detector data collected on the second and the third ring roads of Beijing after a careful analysis on the characteristics of them. Then in order to solve these problems and acquire more effective data, the techniques to preprocess these data are presented, including data screening, data denoising, missing values filling and time modifying. Furthermore, the problems from the detectors of Beijing are prevalent, so these methods mentioned in the paper can be applied in other areas.

Abstract

This paper introduces the research and experiment results of a safety range warning system JLUIV-SRWS (Jilin University Intelligent Vehicle-Safety Range Warning System) developed by Jilin University. The proposed system uses artificial intelligence theory and technology t...Lead moreThis paper introduces the research and experiment results of a safety range warning system JLUIV-SRWS (Jilin University Intelligent Vehicle-Safety Range Warning System) developed by Jilin University. The proposed system uses artificial intelligence theory and technology to realize the detection and tracking of front vehicle under different conditions, and then establishes the warning decision to keep a certain safety range. The method proposed in this paper can realize the real-time vehicle detection and forward collision warning. Lots of experiments have been done to validate the algorithm. Experiments results show that the system has good reliability in different environment and different illumination.

Abstract

Tunnels around the world have problems stopping vehicles from entering the tunnel or over height vehicles impacting with the tunnel. The waterscreen presents an image the will make the driver want to stop.Tunnels around the world have problems stopping vehicles from entering the tunnel or over height vehicles impacting with the tunnel. The waterscreen presents an image the will make the driver want to stop.