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Abstract

Floating car equipped with on-board unit is a cost-effective way of collecting real-time traffic information. A key topic of Floating Car Data technology to determine the lower bound of vehicle scale is discussed in this paper. An overall similarity is put forward as an a...Lead moreFloating car equipped with on-board unit is a cost-effective way of collecting real-time traffic information. A key topic of Floating Car Data technology to determine the lower bound of vehicle scale is discussed in this paper. An overall similarity is put forward as an accuracy evaluation criterion of real-time traffic information, and then critical point model is constructed and applied to Floating Car Data Systems in Guangzhou. A valuable conclusion is obtained, and would be a valuable basis for developing FCD system in other cities.

Abstract

In the public transport path plan problem, the goal is to generate a path for getting from point A to point B using buses or subway in the smallest expected time. Because bus arrival time are not determined by a fixed schedule but instead may be random, the problem requir...Lead moreIn the public transport path plan problem, the goal is to generate a path for getting from point A to point B using buses or subway in the smallest expected time. Because bus arrival time are not determined by a fixed schedule but instead may be random, the problem requires more than standard shortest path techniques. In this paper, we studied the constrained reliable shortest path search problem that arises in transit route plan when waiting and in-vehicle traveling time is uncertain. The reliable path under the duration constraint is searched heuristically by avoiding the high time-variation links or transferred node. An in-depth experimental performance analysis of the proposed methods on real transit graphs shows the efficiency of the algorithm.

Abstract

Bus signal priority can improve the operation benefit for public transit department, and reduce bus traveling time on route and waiting time at signalized intersections. In this paper, we attempts to develop a bus signal priority control logic that can improve bus perform...Lead moreBus signal priority can improve the operation benefit for public transit department, and reduce bus traveling time on route and waiting time at signalized intersections. In this paper, we attempts to develop a bus signal priority control logic that can improve bus performance and to not impact the other traffic adversely. And use the departure ratio and performance index (PI) to balance the conflict of bus agency and traffic agency. The processing of this priority control logic is made up of detection, traffic condition estimate, leaving time estimate, arrival time estimate, priority trigger and strategy optimization and decision making. Finally, the effectiveness of this control logic is evaluated using microscopic simulator, VISSIM. Then use a statistical analysis packet, SPSS to analysis the simulated data. The results show that this signal priority control logic significance regularity of bus travel time, increase bus speed and reduces average delay to general traffic. Then the fut

Abstract

The NPA is carrying out the 3 years-pilot projects of signal control system, we said the system “PROFILE”, in order to clarify what it should be to deploy the nationwide and what the problems are. The PROFILE signal control system is new decentralized-type signal control ...Lead moreThe NPA is carrying out the 3 years-pilot projects of signal control system, we said the system “PROFILE”, in order to clarify what it should be to deploy the nationwide and what the problems are. The PROFILE signal control system is new decentralized-type signal control system. The system optimizes signal parameters based on the traffic arrival prediction, which is calculated from the upstream outflow information.We deployed the system at Yokohama City, Kanagawa prefecture and at Matsuyama City, Ehime prefecture in fiscal 2006, where their traffic situations are different, and where we selected considering to the plans offered by prefectural police headquarters. The Yokohama City-pilot project was adopted as large-scale area project and was carried out at 43 intersections in early 2007. The Matsuyama City-pilot project was adopted as small-scale area project and was carried out at 15 intersections in early 2007.

Abstract

Floating cars are an effective way to collect traffic information without roadside sensors. However, because of the limitation of number of floating cars, there is a large amount of missing data with floating car data (FCD.) In an effort to address this problem, we previo...Lead moreFloating cars are an effective way to collect traffic information without roadside sensors. However, because of the limitation of number of floating cars, there is a large amount of missing data with floating car data (FCD.) In an effort to address this problem, we previously proposed a imputation method based on feature space projection. Since imputation is achieved on each feature space axis that represents the spatial correlated component of FCD, the method performs an accurate estimation based on sparse observations. We evaluated this method through a large-scale experiment in Tokyo with 2,000 taxis.

Abstract

This paper analyzes the shortage of existing on-board navigation system information exchange method, and then we look forward to a multi-center information exchange method. We use multi-center conformity technique to fuse user input information (via touch screen, speech a...Lead moreThis paper analyzes the shortage of existing on-board navigation system information exchange method, and then we look forward to a multi-center information exchange method. We use multi-center conformity technique to fuse user input information (via touch screen, speech and visual), and develop the multi-center conformity model and arithmetic based on fuzzy theory. Test results showed that, compared with the traditional single-channel input methods, this method is more natural, accurate, safe and efficient.

Abstract

Ｗe introduce the situation of deployment of PTPS (Public Transportation Priority Systems) and FAST (Fast Emergency Vehicle Preemption Systems)(PTPS and FAST are a kind of UTMS subsystems. UTMS is a concept of ITS promoted by Japanese Police). Moreover, we show those effe...Lead moreＷe introduce the situation of deployment of PTPS (Public Transportation Priority Systems) and FAST (Fast Emergency Vehicle Preemption Systems)(PTPS and FAST are a kind of UTMS subsystems. UTMS is a concept of ITS promoted by Japanese Police). Moreover, we show those effects and consider the factor of the effects and the effective way to deploy.

Abstract

This paper describes the scope of personalized driver assistance system, especially intelligent braking assistance system, adapted to ordinary driver behavior utilizing continuous sensing data in urban driving. Nowadays, it is important that the driver assistance system s...Lead moreThis paper describes the scope of personalized driver assistance system, especially intelligent braking assistance system, adapted to ordinary driver behavior utilizing continuous sensing data in urban driving. Nowadays, it is important that the driver assistance system should be adaptable to each individual driver in order to fit driver preferences as well as improve driver acceptance and to support the driver performance depending on the level of driving task demand. In this process, road situation recognition and driver models, including recognition, decisive, and operation process, to be used in advanced driver assistance system become necessary. In normal driving operation, the stored driving data in the urban area of Tokyo is utilized to identify the driving characteristics in longitudinal vehicle control regarding headway control and speed control. The concept of a hazardous index in vehicle following situation and vehicle excess speed along the commuting route are presented.

Abstract

Since BRT (bus rapid transit) system is capable of effectively releasing traffic pressures in urban, it has received more and more attentions over the world. As a new type of public transportation system, BRT should meet the requirements of larger passenger capacity, high...Lead moreSince BRT (bus rapid transit) system is capable of effectively releasing traffic pressures in urban, it has received more and more attentions over the world. As a new type of public transportation system, BRT should meet the requirements of larger passenger capacity, higher service quality and better fleet scheduling. Traffic signal priority guarantees the bus running without stop at junctions but has minimal impact on whole traffic system. In the paper, inductive loop based isolated junction control strategy for BRT is discussed firstly. In order to implement coordinative control for bus priority, this paper presented a flexible control approach based on network. The approach has been applied successfully at the BRT system in Hefei, China.

Abstract

We studied a method of identifying vehicles using vehicle height data obtained from ultrasonic vehicle detectors. We previously proposed vehicle matching based on vehicle sequences (two or more vehicles) instead of one-to-one matching, because many similar vehicles exist ...Lead moreWe studied a method of identifying vehicles using vehicle height data obtained from ultrasonic vehicle detectors. We previously proposed vehicle matching based on vehicle sequences (two or more vehicles) instead of one-to-one matching, because many similar vehicles exist on the road. We developed a Genetic Algorithm method based on traffic characteristic, and we describe an improved method of evaluating vehicle sequences using Levenshtein Distance, also called the edit distance, corresponding to expression of vehicle behavior between upstream and downstream sides. We report on the accuracy of vehicle identification and found that travel time measurement was improved.

Abstract

Intelligent bus dispatching is the core of APTS. In this paper, development of intelligent bus dispatching system of APTS in Guangzhou, south city of China, is discussed. Firstly, system structure of the Guangzhou APTS and the role of the intelligent bus dispatching in th...Lead moreIntelligent bus dispatching is the core of APTS. In this paper, development of intelligent bus dispatching system of APTS in Guangzhou, south city of China, is discussed. Firstly, system structure of the Guangzhou APTS and the role of the intelligent bus dispatching in this system is briefly described. Secondly, basic principle of the intelligent bus dispatching system is discoursed. Thirdly, three key technologies of the intelligent bus dispatching system, the Intelligent Bus Scheduling based on Self-study (IBSS), day-schedule adjustment before dispatching and emergency bus dispatching are discussed in detail. Finally, the application and further work of intelligent bus dispatching system of Guangzhou APTS are also mentioned.

Abstract

The real-time detections of road parameters, such as traffic volume, velocity and time occupancy are essential in ITS. Traditional systems are unable to meet the requirements of deployment convenience, detection accuracy, and overall cost. In this paper, we present the de...Lead moreThe real-time detections of road parameters, such as traffic volume, velocity and time occupancy are essential in ITS. Traditional systems are unable to meet the requirements of deployment convenience, detection accuracy, and overall cost. In this paper, we present the design and implement of a traffic monitoring system based on WSN technology, by which the information of traffic volume, velocity and time occupancy is obtained. We describe the systematic architecture design and hardware development. We provide efficient algorithms for the detection of traffic volume, velocity lane occupancy and vehicle classification. We also evaluate the system with performance data collected from on road experiments.

Abstract

In this paper, the effect of the inter-vehicle communication scheme where PN code in DS/SS communication is assigned to the location on the load is discussed. The conventional DS/SS schemes that dynamically assign PN codes have problems to be solved such as efficient PN c...Lead moreIn this paper, the effect of the inter-vehicle communication scheme where PN code in DS/SS communication is assigned to the location on the load is discussed. The conventional DS/SS schemes that dynamically assign PN codes have problems to be solved such as efficient PN code selection, scheme to exchange of the assigned PN code information between vehicles, reduction of PN code collision, and so on. In the proposed scheme, it is possible to solve these problems smartly.

Abstract

Variable Message Sign (VMS) is a very important instrument to issue the real-time traffic information in Urban Traffic Flow Guidance System. The VMS only can exert their best affection when they locate on the optimal location. When determining the optimal VMS location, we...Lead moreVariable Message Sign (VMS) is a very important instrument to issue the real-time traffic information in Urban Traffic Flow Guidance System. The VMS only can exert their best affection when they locate on the optimal location. When determining the optimal VMS location, we often based on the experience. This paper discusses a new method based on analyzing the intersection important degree in traffic network, and determines the key traffic direction in the key intersection. Lastly, the method is applied in a simulation experiment in Changchun city. According to the analysis result, we can prove the method is effective.

Abstract

An index system and method for assessment of accident prevention effect of fixed speed camera are put forward in this paper. Based on the assessment case in Beijing, the study adopts velocity-measuring experiments for the contrast of objective speed variation and discrete...Lead moreAn index system and method for assessment of accident prevention effect of fixed speed camera are put forward in this paper. Based on the assessment case in Beijing, the study adopts velocity-measuring experiments for the contrast of objective speed variation and discrete between upper and lower stream along experiment roads equipped with fixed speed cameras so as to achieve the accident prevention effect indirectly. To analyze the effect completely, four road types and three vehicle types are involved in. At the same time, questionnaire investigations on user satisfaction are carried out for subjective analysis.

Abstract

We have developed an in-vehicle broadband network technology using IDB-1394 (ITS Data Bus-1394) with the new real-time image codec named “SmartCODEC™”[1] for in-vehicle real-time video streaming. The SmartCODEC™ features a compression rate of one-third (1/3), a fast compr...Lead moreWe have developed an in-vehicle broadband network technology using IDB-1394 (ITS Data Bus-1394) with the new real-time image codec named “SmartCODEC™”[1] for in-vehicle real-time video streaming. The SmartCODEC™ features a compression rate of one-third (1/3), a fast compression-decompression time of just 2 to 3 milliseconds and a low cost in use without external memories. We have realized a multiple video transmission for the first time in the industry which consists of an embedded RSE system featuring real-time navigation image and an embedded multi-camera system featuring high resolution image.

Abstract

In this paper, we describe SOTIS, a speech-operated on-board traveler information system that allows users to find their position in cities and to ask for information about places of interest; SOTIS can guide users to the places they want. The user can communicate with SO...Lead moreIn this paper, we describe SOTIS, a speech-operated on-board traveler information system that allows users to find their position in cities and to ask for information about places of interest; SOTIS can guide users to the places they want. The user can communicate with SOTIS either by means of speech input or via a touch screen. SOTIS automatically decides whether to respond through the integrated speech synthesis or display messages. SOTIS is currently available for the city of Changchun. It was designed to run on embedded computers, e.g. the x 86 families, and is available in Windows XP embedded.

Abstract

This paper describes a real-time simulator that we have developed for evaluating the effectiveness of a vehicle-infrastructure cooperative system through simulated driving. The simulator aims to enable proper evaluation of the target system by simulating the behavior of t...Lead moreThis paper describes a real-time simulator that we have developed for evaluating the effectiveness of a vehicle-infrastructure cooperative system through simulated driving. The simulator aims to enable proper evaluation of the target system by simulating the behavior of the whole system including the sensing subsystem, communication subsystem, and onboard subsystem in real time, synchronized with simulated driving. The behavior of each subsystem is simulated considering its performance and the conditions such as processing capacity, available area, delay, and errors.

Abstract

Under emergency conditions, it is frequently the case that the shortest accessible routes cannot be found rapidly enough because of lack of exact traffic information for the entire network. Pre-planning the paths is an effective way to reduce rescue response time and to k...Lead moreUnder emergency conditions, it is frequently the case that the shortest accessible routes cannot be found rapidly enough because of lack of exact traffic information for the entire network. Pre-planning the paths is an effective way to reduce rescue response time and to keep the post-disaster traffic under control. In the paper, a heuristic path searching and checking algorithm is suggested, in order to efficiently pre-planning good candidate emergency path sets. Every alternative path calculated is checked against both the reasonable path and the alternative path set constraints. The algorithm terminates when any of the alternative path constraints is satisfied. Using the weight increment procedure，the reliability of the path set and the reliability of candidate paths within the set are increased efficiently.

Abstract

A lot of methods for detecting the vehicle by image processing are proposed. In this paper, we propose a vehicle detection method based on the feature points. The feature points are detected from the image obtained form the camera sensor, and optical flow is calculated as...Lead moreA lot of methods for detecting the vehicle by image processing are proposed. In this paper, we propose a vehicle detection method based on the feature points. The feature points are detected from the image obtained form the camera sensor, and optical flow is calculated as its tracking result. Then, they are judged by comparing whether optical flow is a texture of the road origin or a vehicle origin with the map of optical flow corresponding to the speed of the vehicle calculated beforehand. Moreover, this method was applied to the image sequences that contained a variety of circumference vehicle as an experiment, and it verified it.

Abstract

By comparing the local navigation and communication navigation and introducing the present status and problem of China’s radio communication, the paper brings up the necessity and importance of future development of communication navigation, while defining the key technol...Lead moreBy comparing the local navigation and communication navigation and introducing the present status and problem of China’s radio communication, the paper brings up the necessity and importance of future development of communication navigation, while defining the key technologies of communication navigation system. It specifies the communication navigation from aspects of the system architecture, differential updating, data organization, real-time navigation and so on.

Abstract

With technical evolution, the convergence of the new geographic information system (GIS) with the traditional logistics industry is attracting increasing attention. Based on a success story, the article discusses the features of logistics in tobacco industry, analyzes the...Lead moreWith technical evolution, the convergence of the new geographic information system (GIS) with the traditional logistics industry is attracting increasing attention. Based on a success story, the article discusses the features of logistics in tobacco industry, analyzes the basic architecture and key technologies of tobacco logistics vehicle tracking and dispatching system, and indicates the trend of development. The efforts to reform the traditional tobacco logistics by GPS and GIS have been successful and become the future trend.

Abstract

Drivers’ delayed and erroneous judgment reportedly causes road traffic accidents involving pedestrians. This prompts growing demand for “preventive safety” automobile system. However, large variations in pedestrians’ clothing/postures and environmental illuminations make ...Lead moreDrivers’ delayed and erroneous judgment reportedly causes road traffic accidents involving pedestrians. This prompts growing demand for “preventive safety” automobile system. However, large variations in pedestrians’ clothing/postures and environmental illuminations make it difficult to design a robust, real-time pedestrian detector, especially if the camera system is mounted on a moving car. This paper presents a novel implementation comprising: (1) High-dimensional training to make accurate classifiers, and (2) Low-dimensional classification to make fast and simple detector. The proposed system runs faster (~233% speedup) and uses less run-time memory (~60% reduction) while maintaining the same accuracy and robustness, compared to previous methods.

Abstract

The paper introduces the research on statistical and real-time traffic information aggregated navigation experiment in Beijing. Around 7000 taxies running on roads send GPS data to the traffic information center to produce real-time traffic data, and the center accumulate...Lead moreThe paper introduces the research on statistical and real-time traffic information aggregated navigation experiment in Beijing. Around 7000 taxies running on roads send GPS data to the traffic information center to produce real-time traffic data, and the center accumulates the probe data for months. By analyzing historical probe data, statistical database is generated, and in-vehicle navigation system can search route based on real-time traffic data downloaded through CDMA network and the statistical database produced offline. The field test is carried out in January 2007, and the test result will be demonstrated in ITS world congress in Oct. 2007, Beijing.

Abstract

In China, more users have been able to use navigation system or navigation service. However, navigation systems can not always guide drivers on appropriate routes using only map information, especially on the rush hour, because of dynamic change of traffic congestion. Thi...Lead moreIn China, more users have been able to use navigation system or navigation service. However, navigation systems can not always guide drivers on appropriate routes using only map information, especially on the rush hour, because of dynamic change of traffic congestion. This paper presents a PC based navigation system which takes advantage of live traffic data and statistical traffic data. This paper proposes statistical analysis method of historical traffic data and a real time processing system. By using the real time data and statistical data, the PC navigation system can predict accurate travel time and search the fastest route considering the current and predictive congestion. This system is evaluated in a series of field tests in Beijing and the results of the field tests are described in this paper.

Abstract

We propose a system for rain and fog recognition using multiple in-vehicle sensors. Fog density is classified into three levels from a preceding vehicle's visibility given by an in-vehicle camera and inter-vehicle distance by millimeter-wave (mm-wave) radar. Rainfall dete...Lead moreWe propose a system for rain and fog recognition using multiple in-vehicle sensors. Fog density is classified into three levels from a preceding vehicle's visibility given by an in-vehicle camera and inter-vehicle distance by millimeter-wave (mm-wave) radar. Rainfall determination is achieved by detecting raindrops on a windshield from in-vehicle camera images. Experiments using in-vehicle camera images and radar data collected while driving vehicles in foggy or rainy and fair conditions demonstrated the accuracy and the applicability of our system.

Abstract

The National Police Agency decided to execute the model deployment initiative from year 2006 to clarify the problems and what should be for nationwide development of the profile signal control system. The profile signal control system is a new decentralized signal control...Lead moreThe National Police Agency decided to execute the model deployment initiative from year 2006 to clarify the problems and what should be for nationwide development of the profile signal control system. The profile signal control system is a new decentralized signal control system that utilizes the vehicle arrival forecast exchanged with the upstream signal controller. In this paper, the simulation evaluation aiming to clarify the performance of the profile signal control system is shown. An actual signal control system was connected directly with a personal computer in which the traffic simulator was installed. As a result of the simulation evaluations, the effect of the profile signal control system was confirmed compared with conventional control methods.

Abstract

Making valid inferences about network origin-destination (OD) demands from limited traffic count data requires a carefully structured data collection strategy. Determination of the required number of vehicle detectors (VDs) and their installation in strategic locations fo...Lead moreMaking valid inferences about network origin-destination (OD) demands from limited traffic count data requires a carefully structured data collection strategy. Determination of the required number of vehicle detectors (VDs) and their installation in strategic locations for OD estimation purpose is essentially a network location problem. In the present research, a mathematical programming framework based on a user equilibrium assumption was developed to determine the most desirable locations for the deployment of vehicle detectors. The proposed models were evaluated under different network sizes and varying OD demand levels. Numerical results indicate that the proposed mathematical programming model framework is able to find the critical link traffic count information for OD estimation purpose under limited budgetary resources. Moreover, for an accurate estimate of OD demands, the number of required vehicle detectors increases as the network size and OD demands increase. These fin

Abstract

APTS (Advanced public transport system) is an important part in ITS. Firstly, a typical architecture is given in this paper together with the benefit of APTS. Secondly, it is pointed out that different requirement in different areas result in different APTS, so a requirem...Lead moreAPTS (Advanced public transport system) is an important part in ITS. Firstly, a typical architecture is given in this paper together with the benefit of APTS. Secondly, it is pointed out that different requirement in different areas result in different APTS, so a requirement analysis flow is given in the paper as well as the supposed benefit. Thirdly, the key technologies are introduced. At last, this paper gives a conclusion about the future APTS development trends.

Abstract

This paper describes how to help prevent accidents at residential areas, especially those involving children at school zones, by using a car navigation system. First, through the study of actual condition of traffic near school zones, we have proved not only that the thro...Lead moreThis paper describes how to help prevent accidents at residential areas, especially those involving children at school zones, by using a car navigation system. First, through the study of actual condition of traffic near school zones, we have proved not only that the through traffic is very heavy, but also that many vehicles are exceeding the regulatory speed at these areas. Next, based on the questionnaire by elementary school students, we have observed the actual actions made by the students at Hiyari-Hatto locations in school zones and pointed out that there is a big gap between the student’s awareness toward danger and the actual actions they make. Consequently, to solve this problem, we have developed an “Intelligent Speed Advisory(ISA) System”which stimulates drivers to drive safely by warning them via navigation system. And we have launched a field operation test for this system.

Abstract

By collecting and disposing the correlative information of regional logistics, regional modern logistics common information platform system provides the information systems of production distribution and logistics enterprises for basic information of logistics. At the sam...Lead moreBy collecting and disposing the correlative information of regional logistics, regional modern logistics common information platform system provides the information systems of production distribution and logistics enterprises for basic information of logistics. At the same time, by sharing of logistics information, it supports the establishment of cooperative mechanism of industry management and market standardization management among government departments. The establishment’s technology background of regional logistics information platform system may be summed up as three aspects, firstly, integrating logistics information resources; secondly, integrating external logistics resources; thirdly, promoting development of E-business. Combined with the establishing actuality of modern logistics information platform in China and the material requirement of Suzhou industrial development zone, the main function of modern logistics information platform is studied in this paper. And then the

Abstract

This paper combines with logistics management of Olympic Games and its operational characteristics and the requirement of plan and preparation and organization of Beijing Olympic Games in 2008, presents the meaning and sort, serving management and operational mode. With r...Lead moreThis paper combines with logistics management of Olympic Games and its operational characteristics and the requirement of plan and preparation and organization of Beijing Olympic Games in 2008, presents the meaning and sort, serving management and operational mode. With researching on the aim that logistics of Beijing Olympic Games should be to and the effect of modern logistics on the logistics of Beijing Olympic Games, does helpful exploring on the demand degree of logistics of Beijing Olympic Games and correlative technology, and presents the basic countermeasures of completing the logistics of Olympic Games.

Abstract

Recently, due to the fast growth of the information technology applications in the automotive industry, the importance to develop automotive integrated services is well recognized. This paper presents a model of the innovation service and illustrates how an automotive all...Lead moreRecently, due to the fast growth of the information technology applications in the automotive industry, the importance to develop automotive integrated services is well recognized. This paper presents a model of the innovation service and illustrates how an automotive alliance is formed (Automotive Integrated Services & Intelligent Card Alliance, AISICA) in order to organize mutual resources and to offer their consumers a novel and value-added service timely. The Analytical Hierarchical Process (AHP) method is adopted to analyze the critical successful factors of the proposed service model. This research also presents three possible strategies - technology-oriented, service-oriented and collaboration-oriented strategies for the business model to reduce the risks associated. While the proposed model and AISICA is summarized from the experiences from our pilot experiment, it should be used as the basis to attract more organizations to apply automotive integrated services in the future.

Abstract

Recently, many transportation companies in Japan have been collecting dynamic transportation data from the vehicles they operate and utilizing this to upgrade their services. This data is useful to road administrators as well, and can also be utilized to advance transport...Lead moreRecently, many transportation companies in Japan have been collecting dynamic transportation data from the vehicles they operate and utilizing this to upgrade their services. This data is useful to road administrators as well, and can also be utilized to advance transportation management and other road administration measures. In this study, we analyzed road traffic utilizing dynamic transportation data collected in the Nagoya area from taxis, buses, and trucks. As a result, it was found that dynamic transportation data is useful for obtaining the indices that can be employed to consider: (1) the priority of administrative measures in view of the reliability of travel-times; (2) the management of roadwork; and (3) the measures to improve the efficiency and promote the use of public transportation. It is therefore highly relevant to advancing transportation management.

Abstract

We developed an eye-gaze detection method to avoid traffic accidents caused by driver’s oversight. By conventional methods, we have to calibrate by a complex technique to adjust each individual for eye-gaze detection. So, there are some problems to apply these methods to ...Lead moreWe developed an eye-gaze detection method to avoid traffic accidents caused by driver’s oversight. By conventional methods, we have to calibrate by a complex technique to adjust each individual for eye-gaze detection. So, there are some problems to apply these methods to driver monitoring cameras. By our proposed method, we don’t need to calibrate any parameters to adjust each individual for eye-gaze detection.

Abstract

The Central Circular Shinjuku Route that will be completed in 2007 is 10km-length tunnel structure. It has forms of complicated horizontal and vertical alignment that has several diverging and merging sections inside the tunnel so that users can connect to each ramps and ...Lead moreThe Central Circular Shinjuku Route that will be completed in 2007 is 10km-length tunnel structure. It has forms of complicated horizontal and vertical alignment that has several diverging and merging sections inside the tunnel so that users can connect to each ramps and junctions. Moreover, since the route will be a main part of the Metropolitan Expressways, it is expected that the tunnel can carry extremely heavy traffic. Therefore, The traffic control system has been developed in order to carry out the better user's safety. This paper shows the characteristics of the traffic control system.

Abstract

This research aims at developing a real-time simulation-based dynamic traffic model for mixed traffic flow conditions for ATMS/ATIS applications. The real-time model is implemented based on rolling horizon approach. The rolling horizon is advanced for each stage, thus rea...Lead moreThis research aims at developing a real-time simulation-based dynamic traffic model for mixed traffic flow conditions for ATMS/ATIS applications. The real-time model is implemented based on rolling horizon approach. The rolling horizon is advanced for each stage, thus real-time data can be incorporated within the framework. In order to predict normative as well as predictive information, a simulation-based DTA model is employed within each stage. Four different physical vehicle types are explicitly considered and modeled, including car, bus, motorcycle, and truck. In addition to physical vehicles, four different behavioral rules, pre-specified-path driver, user-equilibrium driver, system-optimization driver, and real-time information driver, are considered in the solution procedure.

Abstract

The coordination between the Urban Traffic Control System (UTCS) and the Urban Traffic Guidance System (UTGS) is one of the key problems of urban traffic management. This paper indicates that the influence of UTCS and UTGS upon the whole traffic system is no-equilibrium w...Lead moreThe coordination between the Urban Traffic Control System (UTCS) and the Urban Traffic Guidance System (UTGS) is one of the key problems of urban traffic management. This paper indicates that the influence of UTCS and UTGS upon the whole traffic system is no-equilibrium when traffic system approaches the critical point. And UTGS is the dominate factor (also called Oder Parameter) which determines the evolution of the whole traffic system. Based on the slaving principle of synergetic theory, a traffic flow assignment model is proposed. Its feasibility is validated through simulations. The proposed model can be used to analyze and stimulate further studies of the collaboration between UTCS and UTGS.

Abstract

In the traditional traffic control system, there is no coordination between different regions. This paper analyses the significance of coordination of the region boundary, brings out the condition for coordination and proposes two traffic control situation discrimination ...Lead moreIn the traditional traffic control system, there is no coordination between different regions. This paper analyses the significance of coordination of the region boundary, brings out the condition for coordination and proposes two traffic control situation discrimination models of region boundary. After that, a dynamic hierarchical coordination control model of region boundary is proposed. Finally, a simulation test is carried out to validate the dynamic hierarchical coordination model with the help of Vissim 4.2. Through evaluation index comparison of the traditional traffic control and the coordination model, it is concluded that the dynamic hierarchical coordination model is more efficient and produces better traffic control benefit than the traditional traffic control system.

Abstract

This proposal is concerned with a new concept on inter-vehicle communications, which consist of the highly mounted brake light of a preceding vehicle and a computer vision in a following vehicle. Detection of turning -on of the brake light and the on-off the pattern of th...Lead moreThis proposal is concerned with a new concept on inter-vehicle communications, which consist of the highly mounted brake light of a preceding vehicle and a computer vision in a following vehicle. Detection of turning -on of the brake light and the on-off the pattern of the brake light with the computer vision will have a function of communications, and can tell a driver of the following vehicle on the behavior of the preceding vehicle. When the brake light includes infrared LED’s, the invisible light to the driver can transmit detailed information on the preceding vehicle. The feature of the system is the compatibility between the present system and the system proposed here. Experiments with a breadboard system and some results on the detection of the brake light and the communications will be introduced.