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Abstract

A rule-based plan engine has been developed for Hong Kong Route 8 Traffic Control and Surveillance System. This engine applies Extensible Markup Language (XML) technologies to define a rule hierarchy for the traffic management of expressways, tunnels and bridges. The defi...Lead moreA rule-based plan engine has been developed for Hong Kong Route 8 Traffic Control and Surveillance System. This engine applies Extensible Markup Language (XML) technologies to define a rule hierarchy for the traffic management of expressways, tunnels and bridges. The defined rules cover different types of field response subsystems such as Full Variable Message Signs (FVMS), Lane Control Signals (LCS), Variable Speed Limit Signs, Prismatic Variable Message Signs, Turn on Radio Signs and radio messages. This engine can handle sophisticate traffic operations (i.e., tunnel contra-flow, event combination), complicate roadway geometry and safety checking of system operations. With the realization of this engine, the preparation of traffic response plans can be more effective and efficient.

Abstract

A Decision Support System (DSS) has been developed by Delcan and DHV to provide a traffic integration and model evaluation tool for traffic management of a complex ring road network in Beijing. The DSS applies the most advanced simulation technologies to create a scenario...Lead moreA Decision Support System (DSS) has been developed by Delcan and DHV to provide a traffic integration and model evaluation tool for traffic management of a complex ring road network in Beijing. The DSS applies the most advanced simulation technologies to create a scenario generation and evaluation environment which could assist Beijing Traffic Management Bureau in traffic management in respond to traffic congestion, incidents, road works, Olympic Games, etc.. With the realization of DSS, a more effective traffic response for a given traffic event can be proposed, evaluated, and stored in a knowledge database. Another delivery, Traffic Plan Builder, can convert the traffic response in the DSS knowledge database into a traffic plan for the on-line retrieval requested by the Beijing Traffic Management Integration System.

Abstract

The National Expressway Network Plan (NENP) is one of the most important national strategic plans of china, which was proposed by the Ministry of Communications and approved by the State Council on Oct. 17, 2004. According to the plan, motorway network with length of 85,0...Lead moreThe National Expressway Network Plan (NENP) is one of the most important national strategic plans of china, which was proposed by the Ministry of Communications and approved by the State Council on Oct. 17, 2004. According to the plan, motorway network with length of 85,000km will be constructed in China before 2020, of the total length, 29,000km have been built, 16,000km is under construction, and 40,000km yet to be built. The total forecasted investment for NENP is 2 trillion Yuan (some 240 billion US dollars). The functions of NENP have been discussed sufficiently before approval, and described in detail within the plan, therefore, they will not be discussed again in this paper. The development of such a huge national motorway network will definitely promote the efficiency of transportation and will play a very positive role in the prosperity of economy, however, at the same time, it brings forward revolutionary requirements to the motorway management, it’s a chance but also a cha

Abstract

In our previous research, it was tested that what kind of music has positive effect for preventing drivers’ drowsiness, and it was suggested that “high-preference and fast-tempo” music had most positive effect for leading awakening state. In this research, we evaluated th...Lead moreIn our previous research, it was tested that what kind of music has positive effect for preventing drivers’ drowsiness, and it was suggested that “high-preference and fast-tempo” music had most positive effect for leading awakening state. In this research, we evaluated that differences of the musical effects depend on the quantity of the stimuli for alertness of drivers’ physical state using pulse wave and driving performances. The results were that depend on the quantity of the stimuli, subjects’ state and driving operation were changed. Especially, with or without music, the time until falling asleep were expanded at least 10 minutes in our experiment.

Abstract

Shenzhen Urban Traffic Simulation System (SUTSS) is the first phase of the intelligent transport information platform for planning and public information service purposes. Its main theme is to construct a core traffic simulation system. The system consists of five compone...Lead moreShenzhen Urban Traffic Simulation System (SUTSS) is the first phase of the intelligent transport information platform for planning and public information service purposes. Its main theme is to construct a core traffic simulation system. The system consists of five components: a communication network for transport information, a subsystem for data collection of transport information, a traffic simulation subsystem(including macro, meso and micro levels) and a service subsystem to provide supporting traffic information for planning and policy-making purposes. As a huge system, the major challenge is to develop a transport information platform to meet the framework of integrating the four subsystems mentioned above., Architectonic integration

Abstract

Shenzhen Urban Traffic Simulation System (SUTSS) is the first phase of the intelligent transport information platform for planning and public information service purposes. Its main theme is to construct a core traffic simulation system. The system consists of five compone...Lead moreShenzhen Urban Traffic Simulation System (SUTSS) is the first phase of the intelligent transport information platform for planning and public information service purposes. Its main theme is to construct a core traffic simulation system. The system consists of five components: a communication network for transport information, a subsystem for data collection of transport information, a traffic simulation subsystem(including macro, meso and micro levels) and a service subsystem to provide supporting traffic information for planning and policy-making purposes. As a huge system, the major challenge is to develop a transport information platform to meet the framework of integrating the four subsystems mentioned above., Architectonic integration

Abstract

The paper studies on computing pattern of traffic information dissemination via Internet. Data-transferring mechanism and load assignment from client to server are analyzed from the view of system performance in order to balance network load and to ensure system’s efficie...Lead moreThe paper studies on computing pattern of traffic information dissemination via Internet. Data-transferring mechanism and load assignment from client to server are analyzed from the view of system performance in order to balance network load and to ensure system’s efficiency. An illustrational system based on Beijing has been launched in 2006. Finally, system evaluation and system application are also provided.

Abstract

Among with the grown up of the operation management systems of high-level highway, the integration of management is the development trend. This paper put forward the users, the service and the function of the integrated management system, and describe the realization proc...Lead moreAmong with the grown up of the operation management systems of high-level highway, the integration of management is the development trend. This paper put forward the users, the service and the function of the integrated management system, and describe the realization process of function by pseudo programming language, finally analyze the data dictionary of integrated management system.

Abstract

As the important research content of vehicle intelligent control system(AVCS), active safe technologies, such as vehicle collision warning, are always hot and key point in ITS research, in which collision warning algorithm(CWA) as the core of collision warning system(CWS)...Lead moreAs the important research content of vehicle intelligent control system(AVCS), active safe technologies, such as vehicle collision warning, are always hot and key point in ITS research, in which collision warning algorithm(CWA) as the core of collision warning system(CWS). Using the new technical such as information technology, communication technology and electronic control technology, vehicle collision warning can persist perception road condition, adjacent vehicle march condition as well as itself dynamics performance, then forecast the oncoming potential collision and give a warning. Firstly, on analysis driver's driving behavior, algorithm's warning norm is determined; Secondly, based on warning norm adopting Machine Vision method, the cooperation CWA model of multi-input and multi-output is established which is used in supporting vehicle collision warning system; Finally, the warning algorithm is tested using the actual data, the result shows that this algorithm can carry out war

Abstract

Through the statistical analysis on the causes, time and ways of the expressway obstruction in China, this text, from several angles, shows the situations of expressway obstruction in China so as to provide powerful statistics for the expressway management and the research on the traffic safety.Through the statistical analysis on the causes, time and ways of the expressway obstruction in China, this text, from several angles, shows the situations of expressway obstruction in China so as to provide powerful statistics for the expressway management and the research on the traffic safety.

Abstract

Internavi Premium Club is the original information service that Honda provides to the car navigation system. Above all, Honda makes efforts in travel time prediction. The characteristics of Honda’s travel time information are “Floating car data” and “Travel time predictio...Lead moreInternavi Premium Club is the original information service that Honda provides to the car navigation system. Above all, Honda makes efforts in travel time prediction. The characteristics of Honda’s travel time information are “Floating car data” and “Travel time prediction information”. Honda is trying for improvement of precision of travel time prediction to provide the most suitable route. However, current travel time prediction cannot enough predict phenomena such as sudden accidents. Therefore we studied travel time prediction during incident to predict exactly travel time by using VICS(vehicle information and communication system) data and “Floating car data”.

Abstract

ETCS(Electronic Toll Collection System) which unmanly collects toll is to release traffic jam & stationary on highway . This system is used in more than 30 countries over the world. Its usage is 5% barely in Korea while 54% in Japan, 48% in Italy, 32% in France. Along wit...Lead moreETCS(Electronic Toll Collection System) which unmanly collects toll is to release traffic jam & stationary on highway . This system is used in more than 30 countries over the world. Its usage is 5% barely in Korea while 54% in Japan, 48% in Italy, 32% in France. Along with building a tangible policy for ETCS application, we propose improved strategy and development direction in order to maximize ETCS usage in the advanced ITS.

Abstract

Ministry of Construction&Transportation(MOCT) has enacted and propagated ITS technical regulation for securing nation-wide interoperability and compatibility among ITS service units which is defined by ASN.1 syntax as recommended by international standard. However, there ...Lead moreMinistry of Construction&Transportation(MOCT) has enacted and propagated ITS technical regulation for securing nation-wide interoperability and compatibility among ITS service units which is defined by ASN.1 syntax as recommended by international standard. However, there are difficulties to realize standards defining by ASN.1 because additional technical development like as converter to change ASN.1 syntax into a formal development language, encoding/decoding functions to change abstract syntax into transfer syntax are needed. Therefore the MOCT has developed and provided a general-purpose ASN.1 toolkit at a national level as auxiliary tools for applying ITS technical regulation to ITS. The ASN.1 toolkit consists of the compiler to make ASN.1 specification into C language data structures, libraries to provide ASN.1 encoding and decoding functions by basic encoding rules(BER) and graphic user interface(GUI) to editing ASN.1 syntax.

Abstract

An enlarged ITS area, local provinces, builders and operators of ITS project’s planning, order, construction and completion are having problems by lack of expert knowledge reference to ITS standardization. Accordingly, this ITS Standard Manual indicated that ITS project p...Lead moreAn enlarged ITS area, local provinces, builders and operators of ITS project’s planning, order, construction and completion are having problems by lack of expert knowledge reference to ITS standardization. Accordingly, this ITS Standard Manual indicated that ITS project process needs all about ITS standardization procedure and conduct. For example, related documents, references, literature cited etc. Especially, there is a great significance with ITS business performances. Also, this paper shows application examples of the project are adapted to ITS standards. Ministry of construction and Transportation has enacted recently 4 critical standards for compatibility and interoperability of ITS in all over local provinces and promoting user conveniences.

Abstract

Recently in Korea, the project of Hi-pass system has been constructed in the national highway tollgates about 17 tollgates. Especially, most of the tollgates are different shape, traffic volume, and traffic flow. The objective of this paper is to find a location of ETCS l...Lead moreRecently in Korea, the project of Hi-pass system has been constructed in the national highway tollgates about 17 tollgates. Especially, most of the tollgates are different shape, traffic volume, and traffic flow. The objective of this paper is to find a location of ETCS lane that the tollgates are efficiently operated. For this study, the Seoul tollgate are selected as case study site, and surveyed the tollplaza shape, traffic volume, payment method and so on. To analysis the effectiveness of the Seoul tollgates as the location of ETCS lane is developed the tollgates simulation model and used it. As a result of simulation, the location of ETCS lane to minimize the average travel time at tollgates is analyzed the left side lane.

Abstract

As not more important than express highway in road grade, national highway is planned with less system cost per unit distance, but it is being operated with more dependency on decision on the traffic performance more reliable than travel time estimation since such nationa...Lead moreAs not more important than express highway in road grade, national highway is planned with less system cost per unit distance, but it is being operated with more dependency on decision on the traffic performance more reliable than travel time estimation since such national highway has signals causing more difficulties in generation of traffic information compared with express highway. The detection system is installed giving more weight on estimation of necessary travel time, which makes possible to suggest a detection system appropriate to national highway traffic information service strategy through grouping national highway ITS sections by road and traffic characteristics to offer each group an appropriate location of detection system for maximizing the reliability of decision on the traffic performance.

Abstract

Korean technical standards currently enacted are defined as abstract syntax notation(Abstract Syntax Notation One, ASN.1) that can express information with independent methods in the platform and operation system according to technical trends of international standards.Korean technical standards currently enacted are defined as abstract syntax notation(Abstract Syntax Notation One, ASN.1) that can express information with independent methods in the platform and operation system according to technical trends of international standards.

Abstract

Korea Expressway Corporation has established a method of embodying multi-services on the currently used DSRC-based commercial ETCS and embodied a DSRC-based multi-application that could be directly applied in actual commercial services so as to meet the existing users' various services.Korea Expressway Corporation has established a method of embodying multi-services on the currently used DSRC-based commercial ETCS and embodied a DSRC-based multi-application that could be directly applied in actual commercial services so as to meet the existing users' various services.

Abstract

In the Terrestrial Digital Multimedia Broadcasting (T-DMB), H.264 and Bit Sliced Audio Coding (BSAC) for video and audio compression provide high compression rate. On the other hand, these techniques cause high cost and power consumption problems in the terminal due to hi...Lead moreIn the Terrestrial Digital Multimedia Broadcasting (T-DMB), H.264 and Bit Sliced Audio Coding (BSAC) for video and audio compression provide high compression rate. On the other hand, these techniques cause high cost and power consumption problems in the terminal due to high decoder complexity. To solve these problems, this paper proposes DMB over Wireless Local Area Network (WLAN) system where users can access DMB contents on Windows Media Players connected to WLAN. The system receives the DMB signal transmitted by broadcasting stations, decodes the H.264 and BSAC coded information, performs transcoding to Windows Media Player format, and then transmits the data by multicasting using the conventional WLAN.

Abstract

The most important theoretical meaning of the study is that re-erects the process of the driver's logical decision about selecting the service lane as the heuristic model, improves the exposition of vehicle movement at toll plazas by probability distribution and makes the...Lead moreThe most important theoretical meaning of the study is that re-erects the process of the driver's logical decision about selecting the service lane as the heuristic model, improves the exposition of vehicle movement at toll plazas by probability distribution and makes the accurate representation of the traffic conditions possible. Also, it improves the experiential or theoretical methods to decide the size and position of toll collection facilities considered before the toll road design in the practical aspect related with the design and operation of a toll plaza and suggests the estimated design for practical conditions by the simulation. The new model obtains the excellent performance over 99% on arrival rate according to the field test and the results by the previous models and the vehicle movement by animation imitates the true vehicle movement and queuing generation similarly. And furthermore, the new model improves the mean absolute deviation up to almost 100%.

Abstract

Modern sensing theories and technologies should have the potentialities to collect complete microscopic traffic flow data, including individual vehicle properties, location and movement properties of vehicle series crossing the section or area of view. Microscopic traffic...Lead moreModern sensing theories and technologies should have the potentialities to collect complete microscopic traffic flow data, including individual vehicle properties, location and movement properties of vehicle series crossing the section or area of view. Microscopic traffic flow data are essential for capacity analysis, intelligent traffic control, abnormal traffic state recognition, microscopic traffic flow characteristics study, macroscopic traffic phenomenon understanding, Experimental Traffic Engineering (ETE) development, etc. Video detection technologies are significant for microscopic traffic flow data collection and study. This paper systematically analyzes microscopic traffic flow data and gives the description models, according to which the section and area video detection technologies we developed are introduced.

Abstract

Seoul Metropolitan city previously constructed Bus Management System (hereinafter referred as BMS) that is for preparation of public transportation system reorganization such as introducing public transportation fare system of distance-proportion, semi-public management o...Lead moreSeoul Metropolitan city previously constructed Bus Management System (hereinafter referred as BMS) that is for preparation of public transportation system reorganization such as introducing public transportation fare system of distance-proportion, semi-public management of bus and etc. Building the BMS is one of the solutions to release serious traffic problem in Seoul. Seoul has heavy traffic jam because of continuously increasing vehicles being full on the road so that this focuses on the public transportation. BMS also focuses on the customer's satisfaction by making bus on-time-arrival and producing diverse data for later public transportation plan. BMS is well used for a basic system of public transportation reorganization with New Transportation Card System. Seoul city needed promotion as of Seoul traffic information and transportation to prepare UITP opening in Seoul in July, 2005. It extended previous BMS in order to collect and manage traffic stream, images, public traffic in

Abstract

Along with increase of ETC users, ratio of vehicles which pass through the toll booth bars uncharged increases. We tested the pass-through vehicle detecting system (PVDS) in order to set the standard of the system. For this system, we used Stereo Image Processing, which u...Lead moreAlong with increase of ETC users, ratio of vehicles which pass through the toll booth bars uncharged increases. We tested the pass-through vehicle detecting system (PVDS) in order to set the standard of the system. For this system, we used Stereo Image Processing, which uses two paralleled cameras and object detection algorithm. The results of the test satisfied our requirements even though we need further improvements.

Abstract

Although Hi-pass have been operated for alleviating traffic congestion and enhancing mobility in expressways since 2000, there is not any standard for safe operation. For that reason, we investigated about tubular markers, which is a typical facility for safety in Hi-pass...Lead moreAlthough Hi-pass have been operated for alleviating traffic congestion and enhancing mobility in expressways since 2000, there is not any standard for safe operation. For that reason, we investigated about tubular markers, which is a typical facility for safety in Hi-pass. Tubular Markers are installed for separating same or opposite traffic flows spatially, supporting the marks at a place which has not only high possibility of accidents but distinguished carefulness of drivers. In this paper, it is noted two considering; one is prevention of accident from the speed gap of autos and Hi-pass vehicles; the other is guarantee of necessary length that Hi-pass vehicles could be changes the lanes for off-ramp. Focusing those considerations, it is proposed not only proper length of tubular markers at interchange and main tollgates, but also fundamental basic subjects. We anticipate that the results of this study would be useful reference in more safe and efficient tollgate operations

Abstract

BRT systems are being popular and application of Intelligent Transport system (ITS) technologies are assisting to increase its performance. This paper explains the application of appropriate ITS technologies to various operational elements of Bus Rapid Transit (BRT) syste...Lead moreBRT systems are being popular and application of Intelligent Transport system (ITS) technologies are assisting to increase its performance. This paper explains the application of appropriate ITS technologies to various operational elements of Bus Rapid Transit (BRT) systems that will facilitate to increase the effectiveness of BRT vehicle with increasing bus speed and reliability concerns associated with BRT operations. It has suggested the different ITS strategy suitable for different BRT elements providing system wide benefit. The marginal benefit depends on the integration of certain type of ITS technology with certain BRT element at certain stage. Finally, some proposal for deploying innovative ITS controlled BRT were proposed.

Abstract

In order to prevent accidents, a driver needs to be aware of the vehicle's surrounding. Recently, uses of on board cameras to prevent accidents have gathered attention all over the world. We have designed multiple algorithms to assist the driver in maintaining safety whil...Lead moreIn order to prevent accidents, a driver needs to be aware of the vehicle's surrounding. Recently, uses of on board cameras to prevent accidents have gathered attention all over the world. We have designed multiple algorithms to assist the driver in maintaining safety while operation the vehicle. - Four cameras are mounted in every direction to generate an overhead view of the vehicle, using virtual view point and image processing technology. - Image processing technology is used to realize seamless connection between images from adjacent cameras. This is done by using alpha blending algorithm and brightness chromaticity compensation algorithm. - Graphic drawing processing is used to provide caution to a driver in a timely manner. There are more advantages for using hardware algorithm than DSP. It not only prevents image delay, but also minimizes the system cost. We will announce the technology used to realize the LSI in the test result.

Abstract

The ITS of Korea, after the ITS Basic Plan was established in 2000, has been introduced actively in highways, national roads, and also in major cities all over the country including cities modeled with new transportation such as Daejon, Jeonju, and Jeju, being emphasized ...Lead moreThe ITS of Korea, after the ITS Basic Plan was established in 2000, has been introduced actively in highways, national roads, and also in major cities all over the country including cities modeled with new transportation such as Daejon, Jeonju, and Jeju, being emphasized as important solutions to the traffic problem. As the economic social activities of citizens become more metropolitan and diverse, the demand for an integrated provision of metropolitan transportation information in addition to traffic information and local information is increasing; and in Korea, beginning with 28 Local self-governed Organizations in 2005, 20 Traffic Information Centers were established in 2006

Abstract

This research is for the performance improvement of automated traffic incident recorder, we develop the better system revised a viewpoint of video detection technique in operation currently within the country and would like to suggest a way to elevate the capability utili...Lead moreThis research is for the performance improvement of automated traffic incident recorder, we develop the better system revised a viewpoint of video detection technique in operation currently within the country and would like to suggest a way to elevate the capability utilizing merits of the sound detection system. 1st. - The video detection system is amended a current developed image recognition system, object recognition and weight application finished a further test, and a fluid examination. 2nd. - For the sound detection system, we provided to meet a local environment the sound filter for incident detection on the each accident pattern with analysis of real accident sounds and videos holding currently. 3rd. - Using both detection methods combined video and sound, we tested the system which analyzes together each incident detection filtering to raise the rate of incident recognition.

Abstract

Manual collection is one of the methods implemented to collect traffic information. The data collected in this way is mainly about jam information of the roads, and is finally gathered together as the road status report. But the road status report is expressed by natural ...Lead moreManual collection is one of the methods implemented to collect traffic information. The data collected in this way is mainly about jam information of the roads, and is finally gathered together as the road status report. But the road status report is expressed by natural language, which could cause manual errors. So it is necessary to evaluate its quality before using it as the data source for traffic information service system. This paper proposes an approach to evaluate the quality of the road status report, and the result of the experiment based on this approach becomes the basis of improving the quality of the road status report.

Abstract

Credit management is a new idea and an effective means for road transport government to manage and normalize the transportation industry, but its application is just under exploring. So Ministry of Science and Technology has sponsored a project to research on credit manag...Lead moreCredit management is a new idea and an effective means for road transport government to manage and normalize the transportation industry, but its application is just under exploring. So Ministry of Science and Technology has sponsored a project to research on credit management for road transport, as well as to develop demonstration systems. The relative research works on credit management for road transport are introduced, including research on credit system and management mechanism, research on credit evaluation index and methods, research on credit data encoding and standardization. Two demonstration systems developed in Shenyang and Beijing are also introduced.

Abstract

This study is to develop that the standard for digital tachograph. It is in order to manage the driver of commercial vehicles through driving record data on standardized. It has been known that today’s mechanical tachograph systems have some limitations to reliably keep t...Lead moreThis study is to develop that the standard for digital tachograph. It is in order to manage the driver of commercial vehicles through driving record data on standardized. It has been known that today’s mechanical tachograph systems have some limitations to reliably keep track of whether drivers adhere to speed limits and mandatory rest times. Moreover, no database is currently available for the purpose of safety driving management for commercial vehicles because a little different recording paper or recorded data type. And digital tachographs with various functions are currently being manufactured and used in commercial vehicles. Therefore this paper should be find that the solvable problem at standardization of new digital tachograph and interface for driving record. This paper should defining standardization items as follows. - Based function of digital tachograph for use of vehicle - Interface between tachograph and collection center of driving record

Abstract

Architecture research on shanghai EXPO transport information services (TIS) is a conceptional planning of ITS applications and projects to be implemented in 2010 Shanghai EXPO. We absorbed the experiences of TIS applications in former EXPOS and Olympic Games. Architecture...Lead moreArchitecture research on shanghai EXPO transport information services (TIS) is a conceptional planning of ITS applications and projects to be implemented in 2010 Shanghai EXPO. We absorbed the experiences of TIS applications in former EXPOS and Olympic Games. Architecture of EXPO TIS system is an integration design of several sub-systems, according to TIS requirements of different users in different area, based on EXPO traffic characteristics and management strategies. It is composed of EXPO transport information detecting system, integrated platform and seven TIS application systems.

Abstract

Humanoid Robots are a very interesting kind of Robots. They do some human activities with several specifications. Humanoid robots have several applications but for our application we need a face of natural human (Mask) with some typical police capability, after designing ...Lead moreHumanoid Robots are a very interesting kind of Robots. They do some human activities with several specifications. Humanoid robots have several applications but for our application we need a face of natural human (Mask) with some typical police capability, after designing we made it in Electronic Development Co. Of Researchers. Then robot is configured to make a real imaging and sense for existence of a human body in roads, our group developed some new types of humanoid robot that can be used for accident alarm and for road supervision. The robot is programmed to decrease road accidents. In this paper the robot description and robot parts are introduced and at the end experimental results of robot application in a highway are presented.

Abstract

In this paper we present the Magnode, a wireless sensor node which used two magnetic sensors spaced by a distance of 11 cm for vehicle detection and velocity measurement. We address hardware design issues such as low-power design on a PCB level, power supply selection, an...Lead moreIn this paper we present the Magnode, a wireless sensor node which used two magnetic sensors spaced by a distance of 11 cm for vehicle detection and velocity measurement. We address hardware design issues such as low-power design on a PCB level, power supply selection, and the influence of environmental conditions on the operation of the node. We also present for the results of field tests performed to determine vehicle velocity.

Abstract

In this paper, on the base of analyzing the control problem of single intersection, a kind of real-time method with PSO (Particle Swarm Optimization) solving signal timings for single intersection is put forward. On detecting the flow of current cycle and the cycle before...Lead moreIn this paper, on the base of analyzing the control problem of single intersection, a kind of real-time method with PSO (Particle Swarm Optimization) solving signal timings for single intersection is put forward. On detecting the flow of current cycle and the cycle before, estimating the flow of next circle is proceeded. Setting least delay as performance index, we get each phase time for the next cycle. A simulation experiment for the traffic model at a four-phase intersection is also performed. The result shows that the method is efficient.

Abstract

We produced a new method to analyze inherent relations of vehicle accidents data. On the base of introducing the importance and related technology of extracting characteristic rules from classified vehicle accidents data, we gave the concept of vehicle accidents attribute...Lead moreWe produced a new method to analyze inherent relations of vehicle accidents data. On the base of introducing the importance and related technology of extracting characteristic rules from classified vehicle accidents data, we gave the concept of vehicle accidents attributes and built its database, and gave the method of extracting characteristic rules from classified vehicle accidents attributes data. Lastly, we tested the validity of the process.

Abstract

One of the critical applications of Inter-vehicle communications is vehicular collision warning application. The application alerts to drivers, helping them become aware of the presence of other vehicles. To create the application, Inter-vehicle communications contribute ...Lead moreOne of the critical applications of Inter-vehicle communications is vehicular collision warning application. The application alerts to drivers, helping them become aware of the presence of other vehicles. To create the application, Inter-vehicle communications contribute to transmit and receive a packet which includes location, speed and so on. Furthermore, a relay control protocol provides indirect communications by relaying packets. In this paper, we propose an application oriented relay control function for the Inter-vehicle communications. The proposed function can reduce the amount of communication traffic by using distance information which is abstracted from requirements of the application. Furthermore, the proposed function can be used as an additional function of basic functions of the relay control protocol.

Abstract

The application of information technology makes it possible that transportation planning professional utilize mass detective data. The paper, according to Business Process Reengineering theory, analyzes the effect of transportation planning operation Process Reengineering...Lead moreThe application of information technology makes it possible that transportation planning professional utilize mass detective data. The paper, according to Business Process Reengineering theory, analyzes the effect of transportation planning operation Process Reengineering on transportation planning operation. The system in the paper is developed based on transportation software-VISUM, and integrates real time data with static planning model. With application of GIS, non-model professional users can input the key parameters of planning models at the client. The results of the model are expressed in template chart and table at the client. The modelers can calibrate the models with the real-time data to improve the precise of the models. Finally, an case is used to demonstrate the effect of Transportation Planning Model Aid Design System on simplifying planning process and increasing the precise of models

Abstract

50 video Drive Recorders (DRs) have been installed in 50 taxis to carry out a large-scale accident investigation at the first time in China. Based on data of image of traffic environment, vehicle status and driver operations in emergency situations collected by DRs, inter...Lead more50 video Drive Recorders (DRs) have been installed in 50 taxis to carry out a large-scale accident investigation at the first time in China. Based on data of image of traffic environment, vehicle status and driver operations in emergency situations collected by DRs, interactions of driver with vehicle and traffic environment are analyzed synthetically and inherent causations of traffic accidents are explored.

Abstract

This paper studies the travel guidance with Pareto Improvement that can reduce social costs of the traffic congestion loss and environmental loads, when the high quality of traffic information is provided on most of roads. The travel guidance with Pareto Improvement is de...Lead moreThis paper studies the travel guidance with Pareto Improvement that can reduce social costs of the traffic congestion loss and environmental loads, when the high quality of traffic information is provided on most of roads. The travel guidance with Pareto Improvement is defined as the route or departure time guidance that can reduce at least one individual's travel cost, without increasing any other driver's travel cost.