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Abstract

This Paper presents A Study on Organizational Approach for Traffic Management Center Operation - Busan Matropolitan City Consideration - Now, We give you some domestic or overseas Instance Consideration of ITS TMC Operating Organization Thanks for Your Concern!This Paper presents A Study on Organizational Approach for Traffic Management Center Operation - Busan Matropolitan City Consideration - Now, We give you some domestic or overseas Instance Consideration of ITS TMC Operating Organization Thanks for Your Concern!

Abstract

Korean government has recently set up new ‘Railway Safety Act (2004)’ for safety management based on risk assessment. In the risk assessment and risk reduction process, it is important to manage the identified hazards and control the risk tolerable. To effectively control...Lead moreKorean government has recently set up new ‘Railway Safety Act (2004)’ for safety management based on risk assessment. In the risk assessment and risk reduction process, it is important to manage the identified hazards and control the risk tolerable. To effectively control risk, the tool that could trace hazards and justify safety requirements is needed for the complicated system like the railway. In this paper, a system is proposed that provides traceability between the identified hazards and safety measures with the consideration of the railway system configurations and safety activities. It is also useful for the cost-effectiveness analysis which is often used as basis for comparisons between competing safety measures.

Abstract

Railroad safety technology R&D project is now going on for the target of establishing detailed enforcement base of railroad safety act, which was established after Daegu train fire accident in the year of 2003, and reducing railroad accident rate. Railroad safety technolo...Lead moreRailroad safety technology R&D project is now going on for the target of establishing detailed enforcement base of railroad safety act, which was established after Daegu train fire accident in the year of 2003, and reducing railroad accident rate. Railroad safety technology R&D project pushing forward from 2004-2011 is composed of following fields. 1) system engineering and management of the project. 2) establishing safety management system 3) preventing major accident and mitigating the severity. The result of research and development pushing ahead from 2004 was reflected in improvement of the system. Matters related on improvement of hardware installation are supposed to be reflected later on. Establishing and replacing the infrastructure and rolling stocks are expected to require great amount of costs. Therefore not only result of the project but also variety of information developed and acquired during the process of the research are required for verifying the result of the study, minimizing the side effect of the installing, and efficient utilization of material. Information on accident statistics, input data of risk assessment, detailed matters required for safety facility, and information related on process of performing the study and developing the standard are required. This paper describes study management system based on system engineering method which was introduced for systematic management of study information and also practical plan for application of the study result.

Abstract

ITS is the acronym for Intelligent Transport Systems. It is an intelligent traffic system in which electronic, information, control and communication technology have been grafted to the traffic system. Its objective is to build a fast and safe next generation traffic mana...Lead moreITS is the acronym for Intelligent Transport Systems. It is an intelligent traffic system in which electronic, information, control and communication technology have been grafted to the traffic system. Its objective is to build a fast and safe next generation traffic management system. In addition, making traffic more efficient and reducing physical distribution costs by grafting information technology, sensor technology and control technology to all traffic areas is the target that is being pursued.

Abstract

In recent, many countries and local governments have been interested to multi-modal transportation information (MTI) systems to provide integrated information of different transportation modes including public and private modes. A traveler of inter -regional travel, for i...Lead moreIn recent, many countries and local governments have been interested to multi-modal transportation information (MTI) systems to provide integrated information of different transportation modes including public and private modes. A traveler of inter -regional travel, for instance, is able to obtain MTI composed of travel time information of private car from home to departure station, allocation time of inter-regional trains and travel time of local bus from arrival station to destination. Accordingly, MTI systems are expected to contribute to increase use of public transportation and to promote modal shifts from private to public modes. To develop MTI systems, one important issue raised is how to evaluate the benefit of MTI. Therefore, the purposes of the study are to propose a methodology to evaluate the benefit of MTI systems and to show the effectiveness of MTI systems. A laboratory experiment was performed for the case of TAGO (Transport Advice On GOing anywhere) system, which is recently developed MTI system and designed to provide nationwide traffic information in South Korea. Fifteen attendants in total were asked to search transportation information for same travel purpose by using TAGO systems and other individual transportation information systems. An amount of information searching time for each attendant was measured. In the study, underlying transportation information systems were evaluated based on the collected data. Some results of the empirical study showed the availability of the proposed methodology and the effectiveness of MTI systems.

Abstract

At this time, demand for railroad and public transport is increasing continuously as a part of green growth, it is the situation that provision of more convenient and safe traffic means and transfer facility to people using public transport is urgent. Until now, public tr...Lead moreAt this time, demand for railroad and public transport is increasing continuously as a part of green growth, it is the situation that provision of more convenient and safe traffic means and transfer facility to people using public transport is urgent. Until now, public transport facilities such as transit centers were dedicated through early demand prediction before implementing projects and also, it is the situation that facilities are operated based on this. However, it is the reality that initial demand prediction rather invites inconvenience to users as it is not prepared in specified data reflecting characteristics of actual passengers and because of inefficient facility operation together with problems of excessive and too small demand. Therefore, in this research, based on patterns and density information of transit center users and through specific and accurate data, necessity of video image-based pedestrian detection technology for preparing pedestrian related basic data for not only utilization of junction center plan and design fields but also for increasing efficiency of junction center operation will be raised and examine other utilization plan.

Abstract

City development and high industrialization cause increasing traffic accidents and traffic volume. It is very serious problem in Korea. In that reason, this study was undertaken to develop a hazard prediction model by artificial neural network. It will be necessary for im...Lead moreCity development and high industrialization cause increasing traffic accidents and traffic volume. It is very serious problem in Korea. In that reason, this study was undertaken to develop a hazard prediction model by artificial neural network. It will be necessary for improving safety at intersections. There are results of this study. Firstly, this study develops a linear regression analysis between traffic accidents and conflicts. Traffic conflicts are used for a variable of hazard prediction model because correlation between traffic accidents at signal intersection and traffic conflicts are significant. Secondly, traffic accidents prediction model are develop. In this model, traffic volume and difference of lane number are input variables and traffic accident is a dependent variable. Thirdly, optimal model of traffic conflicts prediction at signal intersection are develop. In this model, traffic volume and road geometric which is derived from BPA are input variables and traffic conflict is a dependent variable. Lastly, each traffic accidents prediction value by multiple regression and BPA is compared and evaluated. The results of that, model by BPA is better than multiple regressions.

Abstract

ITS of national highway has been implemented since 1997, 1,909km(13.8%) of total length of national highway(13,842km) is intelligent and in operation in December, 2008. Now ITS service such as Advanced transportation Information System(ATIS), Advanced transportation Manag...Lead moreITS of national highway has been implemented since 1997, 1,909km(13.8%) of total length of national highway(13,842km) is intelligent and in operation in December, 2008. Now ITS service such as Advanced transportation Information System(ATIS), Advanced transportation Management System(ATMS) is considered to be an essential service with which the road shall provide both users and decision-maker. Despite these change of perception, because the ITS facilities is not included as the road design element so far, the road design and ITS design was separately worked out. Generally ITS design and implement since the end of the national highway construction is begun in Korea. As a results users of the newly opened road are provided just simple road service without ITS service. The purpose of this study is to suggest the optimum process for adoption of ITS design to road design and eventually to promote the efficiency and unification of service provision of both road and ITS.

Abstract

This paper explores the application of virtual driving trials to the design of a tunneled highway junction in Tokyo, Japan. A 5-paneled virtual reality simulator allowed for road plans to be experienced from a driver’s perspective in a 3D real-time interactive environment...Lead moreThis paper explores the application of virtual driving trials to the design of a tunneled highway junction in Tokyo, Japan. A 5-paneled virtual reality simulator allowed for road plans to be experienced from a driver’s perspective in a 3D real-time interactive environment. Surveys from subjects driving in the virtual environment as well as behavioral information extracted from the scenarios were used to assess the visibility of signs, road markings, guidance information, and evacuation routes. Results of the driving experiments show that only 20% of drivers observed proposed wall markings, 72% understood exit directions associated with particular colors, 50% noticed overhead traffic notices, and 22% of drivers slowed upon observing warnings of upcoming traffic congestion. Surveys also determined that sign lettering should be made larger, and road markings a lighter blue. Finally, the effectiveness of the virtual reality tool for assisting with signage design and safety assessment is analyzed. Future directions for research and further practical applications for virtual trials are presented.

Abstract

As the basis of policy is being shifted from the existing SOC expansion to Low carbon and Green growth, the discussion about how to measure the friendly- environment effect of related R&D business such as Smart Highway, Ubiquitous Transportation, Ubiquitous city etc. and ...Lead moreAs the basis of policy is being shifted from the existing SOC expansion to Low carbon and Green growth, the discussion about how to measure the friendly- environment effect of related R&D business such as Smart Highway, Ubiquitous Transportation, Ubiquitous city etc. and its appropriacy is actively in progress in Korea.
But because these R&D business are ongoing at the present stage, it is hard to measure and evaluate the effects of services which these intelligent facilities will provide. Nevertheless, it is fact that the quantative effect is needed to confirm the feasibility of those business especially for the decision-makers. Under these backgrounds the purpose of this study is to develop the methodology to measure the friendly-environmental benefits of the established ITS service based on the rate making a detour and to perform the economic analysis. The spatial range in this study is targeted to the intelligent section(1,909km, 13.8%) of total national highway(13,842km, 2008.12).

Abstract

The utilization of ETCS(Electronic Toll Collection System) which collects toll with ?unattended and wireless manner to release traffic jam on highway has maintained steady ?growth since the nationwide installation of ETCS in 2007. According to the Korea Highway ?Corporati...Lead moreThe utilization of ETCS(Electronic Toll Collection System) which collects toll with ?unattended and wireless manner to release traffic jam on highway has maintained steady ?growth since the nationwide installation of ETCS in 2007. According to the Korea Highway ?Corporation, vehicles using ETCS in Korea by the end of 2009 exceeded 43% of total ?vehicles on the turnpike and by 2012 are expected 75% to achieve goal. Accordingly, by the ?application of Multilane System introduced as a part of the establishment of various active ?policies and practices concerning the utilization of domestic ETCS, the advancement strategy ?and the development direction of next-generation ITS services will be provided.? 1. THE EXPECTED EFFECTS OF MULTILANE SYSTEM - INTRODUCTION OF LOW-CARBON ECO-FRIENDLY HIGH-TECH ?SYSTEMS - THE EXPANSION OF STANDARDIZED NEXT-GENERATION ITS - INTEGRATED OPERATION AND MANAGEMENT OF TOLL-PLAZA - PROVIDES EFFECTIVE REAL-TIME TRAFFIC INFORMATION 2. CONSIDERATIONS IN MULTILANE SYSTEM - IMPROVEMENT OF THE COMMUNICATION ACCURACY - REAL-TIME NOTIFICATION FOR THE INELIGIBLE VEHICLES? - INFRASTRUCTURE IMPLEMENTATION TO UTILIZE TRANSPORT ?INFORMATION - REMOTE REAL-TIME MONITORING SYSTEM ? - ENHANCED SECURITY OF USER INFORMATION? 3. UTILIZATION SERVICE IN MULTILANE SYSTEM - TRAFFIC INFORMATION SERVICE - AUTOMATIC NOTIFICATION AND PAYMENT SYSTEM - SAFE DRIVING NOTIFICATION SERVICE

Abstract

Building a Decision Support System (DSS) for the Korean Expressway Corporation (KEC) is a challenging task. The Center for Operations Analysis and Supportive Information System (OASIS) archives about seven (7) gigabytes of traffic-related data everyday from various source...Lead moreBuilding a Decision Support System (DSS) for the Korean Expressway Corporation (KEC) is a challenging task. The Center for Operations Analysis and Supportive Information System (OASIS) archives about seven (7) gigabytes of traffic-related data everyday from various sources, covering about 3,000 km of expressway in South Korea. The data includes vehicle detection systems (e.g., traffic volume, speed, and occupancy rate), toll collection booths, and other various sources. In addition to traffic data, other highway-related information is provided to aid in performing economic feasibility and cost benefit analysis for building highways, traffic demands and forecasting methods, assessing an appropriate toll fee calculation, emergency management, and rest area operation management. Geographic Information System (GIS) is playing an important role in building DSS because of its inherent strength in visualizing traffic information. The researcher’s ability to view several different traffic information layers in a spatial context, especially from an aerial view, is vital for the DSS. A research team, formed in 2007 for a three (3) year research project, is currently developing a Korea Expressway DSS. The research team consists of the Transportation Research Team from KEC, two research universities and one private firm. As part of the first year project, a web-based GIS application was developed to create a prototype system that visualized data from the Toll Collection System (TCS) and the Vehicle Detection System (VDS). Instead of developing its own aerial image map server, the research team used Google Maps API as a mapping application component. By using an available industry web mapping API, they reaped the following benefits: no need to acquire images, no need to develop an image map server, reduced development time and many others. However, many concerns were identified utilizing Google Maps

Abstract

Expressway management information system is a system which supports scientific and efficient maintenance and operation by providing one-click information service, real-time control and analysis information through systematic integration based on electronic maps of those s...Lead moreExpressway management information system is a system which supports scientific and efficient maintenance and operation by providing one-click information service, real-time control and analysis information through systematic integration based on electronic maps of those system operated individually for management of expressways.

Abstract

Transfer Center, the increasingly larger size of the large transit center doeme to move dynamically from the convenience of users considering the transfer of information services are needed. These services are available for private mobile communication terminal (Mobile ph...Lead moreTransfer Center, the increasingly larger size of the large transit center doeme to move dynamically from the convenience of users considering the transfer of information services are needed. These services are available for private mobile communication terminal (Mobile phone, Smart phone) to go through a dynamic information that became available to users. In particular, Wi-Fi Indoor Location Positioning Technology with GPS and Wi-Fi as the practical steps you through the Smart phone is equipped with indoor and outdoor location-based transfer information services are available. However, other Transfer Center through the same terminals to receive the same service standards that are required for transfer information. Therefore, this research centers on the transfer of information services required for transfers and exchanges of information necessary for data and messages and information exchange standard was defined. Through this study, using Transfer Center to users of the service to provide standardized information transfer can be expected to contribute.

Abstract

Lane-mark detection plays an important role in many ITS (Intelligent Transport System) applications like autonomous vehicles and driver assistance systems. This paper presents a real time lane-mark detection system by using an on-board monocular camera fixed at the front ...Lead moreLane-mark detection plays an important role in many ITS (Intelligent Transport System) applications like autonomous vehicles and driver assistance systems. This paper presents a real time lane-mark detection system by using an on-board monocular camera fixed at the front of the vehicle. In the proposed detection system, lane-marks are detected based on an effective combination of directional edge-link features. First, lane-mark candidates are searched inside region of interest (ROI) which is initialized based on a simple road model. During this searching process, a directional edge-pixel linking and edge-gap closing algorithm is used to produce more complete edge-links, and edge-link features like edge-link directions and edge-link pair width are used to filter out noise edge-links that are unlikely to be lane-marks. Finally, colors around candidate edge-link pairs are estimated in YUV color space, and edge-links with lane-mark colors are selected to vote for the possible locations of lane-marks. As output of the lane-mark detection system, three lane-mark parameters are calculated including lane-mark position, number of lane-marks at each side of the lane and lane-mark colors. Experiments under various road conditions are carried out. Results show that the proposed lane-mark detection system can work robustly in real-time, and can provide sufficient lane-mark information for ITS applications

Abstract

The National Institute for Land and Infrastructure Management (NILIM) of the Ministry of Land, Infrastructure, Transport and Tourism has responded to Joint Public-Private Research on Next Generation Road Service Provision Systems implemented based on “ITS Enter the Second...Lead moreThe National Institute for Land and Infrastructure Management (NILIM) of the Ministry of Land, Infrastructure, Transport and Tourism has responded to Joint Public-Private Research on Next Generation Road Service Provision Systems implemented based on “ITS Enter the Second Stage”(August 2004) proposed by the Smartway Project Advisory Committee, by conducting technology development of next-generation road services based on DSRC road-vehicle communication systems. Prior research included the use of roadside equipment installed on urban expressways and center equipment to perform probe data collection experiments, confirming that a DSRC Road-to-Vehicle Communication System can obtain probe data. It has also identified trends in the use of DSRC probe data, comparing behavior history data with frequent accident occurrence locations or calculating CO2 emissions for example. This paper reports on the results of tests of estimating CO2 emissions and clarifying congestion length using DSRC probe data based on the results of past studies.

Abstract

Since 2005, Seoul city has installed bus internal terminals on 400 lines and 8,000 buses to track bus positioning information to operate Bus Management System(hereinafter referred as BMS) and Bus Information System((hereinafter referred as BIS). It was started based on bu...Lead moreSince 2005, Seoul city has installed bus internal terminals on 400 lines and 8,000 buses to track bus positioning information to operate Bus Management System(hereinafter referred as BMS) and Bus Information System((hereinafter referred as BIS). It was started based on bus positioning information and currently it provides bus arrival time in multi contents includes the estimated arrival time. We correct the estimated bus arrival time daily, and constantly try to upgrade its quality, which is the most important thing of the BIS. This document mentions the methodology to gather better information outputs by tunning the estimated bus arrival time information by taking care of characteristics of time and geometries specialities.

Abstract

The Osan to Yangjae section on the Gyeongbu Expressway is one of the main sections of the expressways of Korea. It has a symbolic significance as it was the first expressway, and it plays an integral role in terms of function. Due to changes in the use of nearby land sinc...Lead moreThe Osan to Yangjae section on the Gyeongbu Expressway is one of the main sections of the expressways of Korea. It has a symbolic significance as it was the first expressway, and it plays an integral role in terms of function. Due to changes in the use of nearby land since its opening, its function and shape have dramatically changed. Facilities with large generation gaps exist due to much reinforcement work over time. Overall, the satisfaction level of users is low in terms of function and landscape. In addition, it has recently become a place for diverse traffic policy tests, for bus exclusive lanes on weekdays, shoulder lanes, and the Hi-Pass. The driving environment is worsening due to the resulting adjustments of the cross-sections on other roads. The purpose of this paper is to recognize the importance of the Osan to Yangjae section on the Gyeongbu Expressway again and to transform the section into a Very Important Path (VIP)section that can represent the expressways of Korea by creating advanced public spaces and facilities and following the diversified user needs and the latest changes in policies. In order to do so, in this paper the direction of improvement and methods for working on improvement are defined and the basic concept of each goal is presented on the premise that the consistency of the road facilities is ensured and that the direction of remodeling accepts the conception of cutting-edge functions and beautiful landscaping.

Abstract

The so-called intelligent vehicles are those with the technologies of electronics, electrical, communication, ITS, and intelligent transportation systems imported. This can develop an advanced vehicle control system and the products with higher security; meanwhile, the co...Lead moreThe so-called intelligent vehicles are those with the technologies of electronics, electrical, communication, ITS, and intelligent transportation systems imported. This can develop an advanced vehicle control system and the products with higher security; meanwhile, the combination of the management of the technologies of information, communication, electronics and control is applied to the construction of all transportation softwares and hardwares. This can put the automation of transportation management into practice and upgrade the quality of transport service [1], [2]. Intelligent vehicle technologies can be summarized into three directions: cleaner energy, more comfort & convenience, and smarter & safer. Among them, cleaner energy includes the technologies of alternative energy and light-weighted technologies which means the application of the control system of the engines, electronics power and control networks. On the aspect of more comfort & convenience, the technologies is based on sensors [3] and communication technologies to improve the experience of comfort along with the Telematics system and entertainment information to provide video, digital TV, satellite navigation, vehicle GPS.

Abstract

In this paper, we describe the performance results of the field installation test which is required to practicalize the single-phase MJ81 Switch Point Machine, which has passed the certified test through performance improvement of driving parts in order to use 3 phase MJ8...Lead moreIn this paper, we describe the performance results of the field installation test which is required to practicalize the single-phase MJ81 Switch Point Machine, which has passed the certified test through performance improvement of driving parts in order to use 3 phase MJ81 Switch Point Machine, which is localized by taking over technology from Alstom and Cogifer when constructing Seoul-Busan rapid-transit railway, without change of the electrical equipment at track-side in domestic existing lines which single-phase 220V is used. KRRI and Samsung SDS have localized the single-phase MJ81 Switch Point Machine to improve the speed and safety of the conventional lines through the existing railway technology development project. For practicalization of this, we should, however, verify the performance through not only field installation tests in real lines but also interface tests with the interlocking. In this paper we verify the practicality of the domestic single-phase MJ81 Switch Point Machine through analysis on the performance result of the field installation test as well as the research contents for this test. Thereby, in Jan 2009 we have received an order from the Korea Rail Network Authority and are currently installing the single-phase MJ81 Switch Point Machine.

Abstract

Choosing the right network topology is central to designing a successful industrial Ethernet ITS application. A poor topology creates additional cabling and pipeline costs or even system instability. In addition, Ethernet is an originally IT technology that has been adapt...Lead moreChoosing the right network topology is central to designing a successful industrial Ethernet ITS application. A poor topology creates additional cabling and pipeline costs or even system instability. In addition, Ethernet is an originally IT technology that has been adapted to fit the needs of industrial users. Industrial users have very different priorities from those of the IT world?stability, reliability, redundancy, and ease of maintenance all become paramount. High latency or system downtime is simply unacceptable in many industrial applications.

Abstract

The fatalities of pedestrian account for about 40.0% of all fatalities in Korea 2005. Vehicle -Pedestrian accident generates trajectory of pedestrian. In pedestrian involved accident, the most important data to inspect accident is throw distance of pedestrian. The throw d...Lead moreThe fatalities of pedestrian account for about 40.0% of all fatalities in Korea 2005. Vehicle -Pedestrian accident generates trajectory of pedestrian. In pedestrian involved accident, the most important data to inspect accident is throw distance of pedestrian. The throw distance of pedestrian can be influenced by many variables, such as vehicular frontal shape, vehicular impact speed, the offset of impact point, the height of pedestrian, and road conditions. The trajectory of pedestrian after collision can be influenced by vehicular frontal shape classified into sedan type, box type, SUV type and van type. Many studies have been done about pedestrian accident for simple factors. But study about pedestrian accident with multi variables was not performed. of sedan type car. The trajectory of pedestrian, dynamic characteristics of multi-body were analyzed by PC-CRASH, a kinetic analysis program for a traffic accident. Based on the simulation results, multivariate regression was conduct, and regression equation was presented.

Abstract

The purpose of this study is to establish a system detecting pedestrians or motorcycles located in a blind spot without using an infrastructure such as a roadside unit. We assume that a vehicle has an array antenna as a receiver and a pedestrian or motorcycle has a transm...Lead moreThe purpose of this study is to establish a system detecting pedestrians or motorcycles located in a blind spot without using an infrastructure such as a roadside unit. We assume that a vehicle has an array antenna as a receiver and a pedestrian or motorcycle has a transmitter, and we estimate the direction of arrival of radio wave using Unitary-ESPRIT method. In this paper, we suggested the right and left judgment system. There are two characteristics of this suggestion. First, we use a method which estimates the number of signals as a prior processing the DOA estimation. Second, we also use a distinction method by the likelihood that accumulated by the past information. Simulation Results show the effectiveness of this method.

Abstract

The National ITS Data Registry (DR) provides a universal tool for providing architecture-based information and applying technology standards in addition to providing standard information. However, it is used more often for obtaining standard and related information rather...Lead moreThe National ITS Data Registry (DR) provides a universal tool for providing architecture-based information and applying technology standards in addition to providing standard information. However, it is used more often for obtaining standard and related information rather than for on-line data management. Therefore, improvement is needed so that users can easily be provided with required services. Accordingly, in this study we will discuss the results obtained by improving the ITS DR by reflecting user’s need, and future operation plans.

Abstract

UTMS (Universal Traffic Management Society of Japan) is researching on the technologies and specifications for the traffic flow control using probe data for the CO2 emission reduction. First, we developed the service menu which realizes advanced traffic flow control and e...Lead moreUTMS (Universal Traffic Management Society of Japan) is researching on the technologies and specifications for the traffic flow control using probe data for the CO2 emission reduction. First, we developed the service menu which realizes advanced traffic flow control and examined the technological requirements of each service in 2008. In 2009, we are conducting some kinds of simulation experiments to verify the requirements of probe data and key technologies for the realization of the services in our menu. We report the outline of our service menu and the result of the simulation experiment in this paper.

Abstract

Recently researches on field of intelligent video surveillance are carried out actively but researches on analysis of degree of congestion of the public (Walking density) and flux information (Movement kinds) for guidance service of pedestrians at public buildings such as...Lead moreRecently researches on field of intelligent video surveillance are carried out actively but researches on analysis of degree of congestion of the public (Walking density) and flux information (Movement kinds) for guidance service of pedestrians at public buildings such as transfer station and etc or concentrated region of commercial stores are still at poor level. The purpose of this research is to acquire degree of congestion and flux information of pedestrians, which is basic information necessary for increasing service of transfer system necessary for users of transfer station, with video image detection system. Problems to be solved for developing pedestrian detection algorithm are the difficulties of computing location judgment and degree of congestion of pedestrians since features of pedestrians look different according to camera location in case they are in crowd or in occlusion. Methods suggested in this research have detected moving objects within video images after first mapping real world coordinate and coordinate within video images through camera calibration for solving these problems. If moving objects detected are judged as people through HOG algorithm, afterward real world location and movement information are acquired through continuous detection and tracking and camera calibration information and based on this, degree of congestion and flux information are calculated.

Abstract

Road surface conditions are an important factor which has an effect directly on safe driving together with a road shape. Such road surface conditions are estimated by generalizing road surface temperature, road surface moisture, ground temperature, salt levels, weather, e...Lead moreRoad surface conditions are an important factor which has an effect directly on safe driving together with a road shape. Such road surface conditions are estimated by generalizing road surface temperature, road surface moisture, ground temperature, salt levels, weather, etc. The road sensors are very expensive and buried under the ground by boring a hole through the road concerned which leads to road damage. It is well known that reflectivity of a road surface significantly changes when the road surface is wet to form a water film; and water molecules are characterized in that they scatter under ultraviolet rays and absorb light energy under infrared rays. In this essay, we propose a method of estimating road surface conditions by means of the image analysis techniques, using characteristics of water molecules. This system can be easily installed on a road without damaging the road and it is expected that it can be used in many fields.

Abstract

Fog is a factor which has the most effect on safe driving and hinders driver's view by moisture or dust particles which scatters/scatter light. The particles vary in their size and thus scatter light in various wavelengths to result in being seen visually white. General f...Lead moreFog is a factor which has the most effect on safe driving and hinders driver's view by moisture or dust particles which scatters/scatter light. The particles vary in their size and thus scatter light in various wavelengths to result in being seen visually white. General fog sensors detect the level of fog scattering with laser rays to measure a visible distance. Such sensors are very expensive and cannot be used for other than the purpose. In this paper, we propose a method of detecting fog by using a CMOS image sensor of sensitivity in wide wavelength of light, and comparing the scattered images in a visible ray range with the transmitted images in an infrared range to detect fog. The method proposed in this paper is expected to be applied to many fields because the image sensor is used and it is thus possible to carry out traffic information collection, environment monitoring and the like, using images, in addition to fog detection.

Abstract

The protection of critical transportation assets and infrastructure is an important topic in these days. In this paper, we develop a new rule based approach to smart video surveillance system for detecting situations where people may be in peril, as well as suspicious act...Lead moreThe protection of critical transportation assets and infrastructure is an important topic in these days. In this paper, we develop a new rule based approach to smart video surveillance system for detecting situations where people may be in peril, as well as suspicious action or interactions at or near critical transportation assets. We analyze here three general types of human involved behaviors and interactions: (i) single person or no interaction, (ii) multiple person interactions,　and (iii) person-facility/location interactions. The behavior analysis is accomplished through the development of geometric and motion visual features for each pedestrian. It is very simple and highly effective. The performance evaluation is carried out by using the video sequences taken in the real life environments of rail stations.

Abstract

Urbanization has been rapidly progressed in Incheon over the last 30 years. The rapid economic growth since the early 1970s has resulted in large increases in the demand for transport services and the private car ownership.On the other hand, an increasing rate of the road...Lead moreUrbanization has been rapidly progressed in Incheon over the last 30 years. The rapid economic growth since the early 1970s has resulted in large increases in the demand for transport services and the private car ownership.On the other hand, an increasing rate of the road extension in Incheon is 3.5 percent from 2,118km in 2002 to 2,192km in 2005. Such unbalanced increase between car ownership and road extension substantially leads to severe traffic congestion.The objective of this study is therefore to analysis the travel patterns based on social changes between the years 2002 and 2006, and then to develop main improvements in transport policy in Incheon. In order to develop the main direction in transport policy, the changed trip generations, trip distributions, mode share rates and assigned traffic volumes between the years 2002 and 2006 have been analyzed in detail. In these years the large-scale household travel surveys were conducted in Incheon. As results of the analyses in surveys, trip generation rates have been increased in Incheon. These increases have been caused by the large scale housing development without properly planning and constructing transport infrastructures. The UDI has been developed to see the degree of the unplanned areas, In the trip distribution, a SSR and a IDR are developed and calculated. It is found that the SSR has been increased slightly and the DR has been increased between the years 2002 and 2006. In the modal split analysis, car usage has been increased, but public transport modes have been decreased. In the traffic assignment analysis, the values of the VKT Index and the VHT Index have been increased 21.2% and 13.2% respectively since 2002. Through these analysis, the bus and subway oriented transport policies should be made whilst car restraint policies should be adopted.

Abstract

Video image recognition AVI (Automatic Vehicle Identification) system for collection of the existing section traffic information has collected section traffic information by recognizing and conforming license plates of entrance/exit vehicles. Disadvantage of this system i...Lead moreVideo image recognition AVI (Automatic Vehicle Identification) system for collection of the existing section traffic information has collected section traffic information by recognizing and conforming license plates of entrance/exit vehicles. Disadvantage of this system is that performance of the system totally depends on recognition performance of vehicle license plates and since detectors must be installed per each lane, excessive cost was induced. Vehicle license plates on multi-lanes can be recognized simply using high definition video images but in this case, there is difficulty to reach to expected performance level as recognition rate of vehicle license plate can be deteriorated due to poor screen quality of video images. In this paper, a method, which supplements when deterioration of recognition accuracy of vehicle license plate occurs during collecting multi-lanes traffic information simultaneously using a single high definition video image, was suggested. Methods to extract multiple feature points including vehicle license plate, classes, colors and shapes of vehicle in low definition screen and methods, which conform these, are suggested and performance and validity of the proposed methods was evaluated through traffic information collection of multi-lanes section.

Abstract

At present, most LPRS (License Plate Recognition System) are designed to capture and recognize vehicles in a single lane. Because it is difficult to capture vehicle images in multi-lanes at the same time. In order to recognize vehicle license plates in multi-lanes, it is ...Lead moreAt present, most LPRS (License Plate Recognition System) are designed to capture and recognize vehicles in a single lane. Because it is difficult to capture vehicle images in multi-lanes at the same time. In order to recognize vehicle license plates in multi-lanes, it is essential to capture high-resolution images. In addition, capturing images at a high-speed is essential, there should be little blooming and smear and good infrared sensitivity is required for capturing images under night illumination. The CMOS image sensor is suitable to be used in an outdoor environment such a LPRS in that it has high-speed image capturing, little blooming, no smear and wide dynamic range. However, the high resolution CMOS sensor has a problem to capture images of an object moving at high speed, using a rolling shutter. In this paper, we propose a method of controlling cheap high-resolution CMOS image sensors in order to obtain vehicle images in multi-lanes. First, the image sensor is installed with the 90-degree rotation. Images are caught at a high speed while keeping a desired resolution by carrying out down-sampling in the entire area (global scene) and sub-sampling of the region of interest (vehicle scene) with a time difference in acquiring sensor data. We calculate the driving speed of a vehicle in the down-sampled image and compensate a distortion of the license plate of the vehicle in the sub-sampled image, using the calculated speed. And then a vehicle license plate is recognized by corrected sub-sampled image.

Abstract

The West Nippon Expressway Company Ltd., Shikoku Regional Branch in Japan has been trying to increase the traffic capacity at the bottleneck congestion points on its highway network by applying smart traffic management. Variable Message Signboards (VMSs) were applied to r...Lead moreThe West Nippon Expressway Company Ltd., Shikoku Regional Branch in Japan has been trying to increase the traffic capacity at the bottleneck congestion points on its highway network by applying smart traffic management. Variable Message Signboards (VMSs) were applied to recommend drivers to accelerate the speed while getting out of the traffic congestion. Since 2006, two VMSs to recommend drivers of acceleration have been located near the Osaka tunnel, one of the bottleneck points of congestion. Three years have passed since an installation of the VMS, and the purpose and effects of VMS have gradually been be understood by the public. This paper describes the study results on the effects of the VMSs that have been located three years ago. A case study approach was applied for the case of with/without VMS in order to validate its effects on queue discharge flow rate(QDFR). In the case without VMS, traffic flow volume has plummeted significantly. While in the case of one of the VMSs active, the decrease in traffic flow volume was less than the case without any VMS. It is concluded the case study result that one VMS should have enough effects to reduce traffic congestion at the Osaka Tunnel location.

Abstract

This paper suggests a system of wireless communication in the vehicles to provide intersections image information in real time to support the safety in intersections in which a large number of traffic accidents have happened. Vehicle Multi-hop Communications (VMC) techniq...Lead moreThis paper suggests a system of wireless communication in the vehicles to provide intersections image information in real time to support the safety in intersections in which a large number of traffic accidents have happened. Vehicle Multi-hop Communications (VMC) technique adopted Wireless Access in Vehicular Environments (WAVE) is applied because short latency is important for the efficiency of the information. The image information is collected and processed by the Intersection Safety Equipment (ISE) and sent through cable to base station, which provides image information to the vehicles via wireless communication. This paper verified whether VMC technique is valid for the provision of the intersections image information and decided how to apply it, through introducing VMC technique, suggesting ISE, explaining the structure, and testing integration in reality.

Abstract

This study was performed to develop operation strategies for non-signalized intersections on V2I communication environments.This study was performed to develop operation strategies for non-signalized intersections on V2I communication environments.

Abstract

Currently, service is provided by the Electronic Toll Collection System (ETCS) at all toll gates in the expressways of Republic of Korea. In addition, numerous studies are being carried out in order to collect and provide traffic information through Dedicated Short Range ...Lead moreCurrently, service is provided by the Electronic Toll Collection System (ETCS) at all toll gates in the expressways of Republic of Korea. In addition, numerous studies are being carried out in order to collect and provide traffic information through Dedicated Short Range Communications (DSRC), which is the basis for domestic ETCS. Therefore, a study to provide diverse services by utilizing the Electronic Toll Collection System, infrastructure that has been constructed for existing expressways, and infrastructure for vehicle terminals that are currently being distributed rapidly is being carried out. In order to develop service that utilizes existing infrastructure like this, a plan to apply service that utilizes existing infrastructure is needed. It is possible to realize a service through changes to the standards and organization for communication and system of the existing infrastructure. However, for service that is realized by changing the standards and systems, there is no way to avoid duplicate investments due to costs needed for changing all existing systems that have been constructed. Therefore, mutual connectivity was acquired by utilizing DSRC, infrastructure that is currently being operated in expressways, and a plan to standardize the Layer7 interface for transmission of traffic information by using DSRC based on ISO 14906 and ISO 15628 to avoid physical changes to the existing system was developed in this paper. Effectiveness of this plan was then verified by building a system in which this plan was applied on an actual road.

Abstract

This research is the result of tests of WiFi-based positioning technology at test bed for providing location-based service for pedestrian at indoor space. To carry out positioning at indoor space where GPS cannot be used, RTLS (Real Time Location System) using WiFi was ut...Lead moreThis research is the result of tests of WiFi-based positioning technology at test bed for providing location-based service for pedestrian at indoor space. To carry out positioning at indoor space where GPS cannot be used, RTLS (Real Time Location System) using WiFi was utilized. By composing WiFi Infrastructure at Gwangmyeong station and Gimpo airport, it was tested and analyzed by using UMPC and Smart Phone which general pedestrian can carry without using exclusive Tag for positioning. In particular, in transfer station like Gwangmyeong station and Gimpo airport, lots of open-space in shapes of waiting lounge exist unlike other general buildings. In this open-space, position error of RTLS was analyzed. In addition, position characteristics, which are generated during movement, was analyzed by considering characteristics of pedestrian having lots of movements. As the result of analysis, currently developed WiFi-based RTLS could locate stopped status position within 3m. However, during movement, position was not located or over 20m of error was generated. This is because currently developed RTLS was developed for tracking fixed things such as assets management and equipment tracking and does not have error calibration algorithm. It is judged that high level location-based service for pedestrian like navigation will be possible if we apply positioning technology using WiFi which has calibrated error generating during movement.

Abstract

This research suggests positioning system to provide seamless indoor and outdoor location-based service for Nomadic Devices. GPS in Nomadic Devices location-based service provide relatively accurate position information around 10m but it is impossible to use indoor. As an...Lead moreThis research suggests positioning system to provide seamless indoor and outdoor location-based service for Nomadic Devices. GPS in Nomadic Devices location-based service provide relatively accurate position information around 10m but it is impossible to use indoor. As an alternative, Mobile Networks-based positioning technology is providing indoor & outdoor location information but it generates location errors of several hundred meters. In this research, Position Determination Algorithm was designed which calibrates location error by combining GPS and WPS(WiFi-based Position System) and by using Accelerometer mounted on Nomadic Devices. By fusing diverse positioning technology, it can provide precise position information at indoor & outdoor and as it provides indoor & outdoor location information considering mobility according to types of actions(such as walking) of pedestrians, it is expected that Nomadic Device will provide location-based service.

Abstract

In this paper, a whole development process of a railway safety assessment program in South Korea is introduced. A railway safety assessment program is a web-based software program to examine safety documents automatically and to support railway safety assessor by providin...Lead moreIn this paper, a whole development process of a railway safety assessment program in South Korea is introduced. A railway safety assessment program is a web-based software program to examine safety documents automatically and to support railway safety assessor by providing checklists. The railway safety documents assessed in this program are safety management system (SMS) documents and engineering safety management (ESM) documents. The railway safety documents are examined automatically by software engines and results of the examination are provided to assessors. The program also provides the assessors with document checklists. The railway safety assessment program will become a beneficial web-based program for examining and investigating railway safety documents in South Korea.

Abstract

Various traffic information are collected and processed per each local autonomous organization of the Republic of Korea through introduction of various ITS systems and service of traffic information for citizens is carried out with various methods such as Internet, mobile...Lead moreVarious traffic information are collected and processed per each local autonomous organization of the Republic of Korea through introduction of various ITS systems and service of traffic information for citizens is carried out with various methods such as Internet, mobile, VMS and etc. Traffic information is mutually connected in various methods between centers of each local autonomous organization and services are provided by processing this. However, exchange and connection methods of traffic information are not unified and standardized. Even they are standardized, lots of problems are generating due to differences in interpretation about the standard between each centers. Under this reason, exploration for technology and standardization plans, which can connect and utilize traffic information easily, became inevitable. Therefore, in this study, we plan to discuss system establishment methods, utilization plans and methods for developing and utilizing OPEN-API technology for expanding traffic information connection systems. In addition, we plan to suggest standard and verification plans for definition and application of OPEN-API technology.