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Abstract

Due to advances in camera technology, many digital network cameras are being introduced from existing analog NTSC or PAL type cameras. CCTV net is being changed from existing closed circuit television analog nets to digital nets for sharing images. Fiber optic cable used ...Lead moreDue to advances in camera technology, many digital network cameras are being introduced from existing analog NTSC or PAL type cameras. CCTV net is being changed from existing closed circuit television analog nets to digital nets for sharing images. Fiber optic cable used for sharing images in regular analog CCTV cameras or sharing analog images that have been encoded into digital form leads to image degradation as division and amplification processes are repeated. In order to share CCTV screens of identical image quality without the image degradation of analog CCTVs, a system for sharing images that uses digital CCTVs is needed. In this material, the expressway monitoring system that utilizes CCTV in all regions of the nation by using HD grade digital cameras that were installed by Korea Expressway Corporation will be introduced.

Abstract

Overview: Every person on Earth contributes to the state of our planet, because we all use natural resources and produce waste materials. The more people there are, the more damage they do through pollution. Effects: Pollution can kill or sicken plants, animals, and peopl...Lead moreOverview: Every person on Earth contributes to the state of our planet, because we all use natural resources and produce waste materials. The more people there are, the more damage they do through pollution. Effects: Pollution can kill or sicken plants, animals, and people. Pollution can change the environment. Pollution can get into the air. Air pollution can irritate people’s lungs. Polluted air can mix with rain to make acid rain. Acid rain kills trees and harms fish in lakes. Pollution can also get into soil and water. From there, pollutants can get into the food chain. Solutions: Governments can pass laws that forbid or limit the use of chemicals that cause pollution. Laws can stop factories from dumping poisonous chemicals in lakes, rivers, and the ocean. Engineers can build cars that burn less gasoline. Scientists are looking for fuels to replace coal and oil. They are looking for ways to use the power in wind and in rays from the Sun. We can help cut down on the amount of garbage we make. We can recycle paper, plastic, glass bottles, and metal cans. Recycled material gets used over again. Recycling helps cut down on pollution. Conclusion: The future is not all doom and gloom. Humans are very inventive and intelligent, as well as very destructive and careless. If we understand that our environment is fragile, then we can all help to save it, and the precious and life-giving resources that it provides.

Abstract

Practice of breakaway sign concepts in US and Europe are introduced along with the Korean design practice of sign posts. Potential danger of small sign supports when rigidly connected to concrete footing was studied by LS-DYNA simulation and side impact crash test. To red...Lead morePractice of breakaway sign concepts in US and Europe are introduced along with the Korean design practice of sign posts. Potential danger of small sign supports when rigidly connected to concrete footing was studied by LS-DYNA simulation and side impact crash test. To reduce the potential danger of rigidly connected small sign post, V-notch groove was suggested along the barrel of the pipe with holes as a fracture initiator. From the 40km/h side impact and heard on impact tests, performance of the proposed breakaway function was proven. For the easement of installation and replacement of the sign after an impact, socket with V-notched groove was developed.

Abstract

In this paper, we consider a multi-mode elastic demand traffic assignment problem solved in the transportation network investment decision. The scope of the transportation network involves a national highway and rail systems and OD demand matrix are based on the long term...Lead moreIn this paper, we consider a multi-mode elastic demand traffic assignment problem solved in the transportation network investment decision. The scope of the transportation network involves a national highway and rail systems and OD demand matrix are based on the long term forecasts of passenger and cargo demands using discrete choice model. Mode choice decision considers in this paper are auto, bus, truck, passenger and cargo rails and we develope a variable demand traffic assignment model having inverse demand function and excess flow model and solves using Evans' partial linearization algorithm. Both approaches are compared using a large scale network consisting of 2192 nodes, 5735 links, and 17424 Origin-Destination pairs.

Abstract

Tokyo Metropolitan Expressway Co., Ltd has renewed integrated traffic control systems by using the state-of-the-art technology, in order to provide real-time information to drivers. On the Tokyo Metropolitan Expressway, there are 1,120,000 daily traffics and about 30-40 a...Lead moreTokyo Metropolitan Expressway Co., Ltd has renewed integrated traffic control systems by using the state-of-the-art technology, in order to provide real-time information to drivers. On the Tokyo Metropolitan Expressway, there are 1,120,000 daily traffics and about 30-40 accidents/day, and 24-hours traffic control and management are conducted. For the safe, smooth and comfortable drive of users, integrated and speedy traffic control and management are required. This paper states the concepts of this new traffic control system and describes new facilities of traffic control system. Metropolitan Expressway Co., Ltd also has started new and improved services on providing information. These new services are described in this paper.

Abstract

This paper presents a snowplow driver assistance system (SDAS) based on magnetic, radar and GPS. The SDAS functions include lane position indication, lane departure warning，road dangerous position warning and obstacle warning. Lane position indication and lane departure ...Lead moreThis paper presents a snowplow driver assistance system (SDAS) based on magnetic, radar and GPS. The SDAS functions include lane position indication, lane departure warning，road dangerous position warning and obstacle warning. Lane position indication and lane departure warning were performed by using embedded magnetic reference marker system for lateral position indication within the lane. Meanwhile the location based service (LBS) technology using GPS had also been applied to the SDAS. It could provide the lane position indication, lane departure warning and road dangerous position warning function for the driver under the low visibility conditions. In order to implement obstacle warning, we used millimeter wave radar to detect vehicles and other inorganic objects buried or obscured by snow. Millimeter wave radar has the good ability to measure the accurate distance to an object and is robust in bad weather, but a large number of false alarms in practice were its deadly defect. For the purpose of reducing the false alarm, we proposed a new filter method and extensive experimental results proved that this method significantly improved detection rate. The SDAS has been applied in the Northern China and can be introduced to other provinces. So the SDAS is valuable for public safety in the future.

Abstract

This research summarizes the status and issue of AVI system currently operated in the local road and provides the method to utilize the DSRC traffic information collection device to improve these issues. The proposed system is configured based on additional installation o...Lead moreThis research summarizes the status and issue of AVI system currently operated in the local road and provides the method to utilize the DSRC traffic information collection device to improve these issues. The proposed system is configured based on additional installation of center system related to DSRC antenna to the existing AVI system, and can improve the reliability of the AVI system by providing additional sample data to the current AVI system as well as the unique DSRC system function.

Abstract

This paper provides available information for partial replacement repairing method of the aged steel box-girder bridge and its applicability in site. Safety and weldilability of repair welded joints between the aged and the new steel plates are key factor regarding reliab...Lead moreThis paper provides available information for partial replacement repairing method of the aged steel box-girder bridge and its applicability in site. Safety and weldilability of repair welded joints between the aged and the new steel plates are key factor regarding reliability of the repair method. The tensile and the fatigue tests of the repair welded joints for SWS41(aged steel)-SM400B(new steel) and SWS41-SM490B(new steel) are achieved. The tensile and fatigue performances of the repair welded joints shows enough capacities as a structural connection as well as properly applicability to the aged steel box-girder bridge.

Abstract

First of all, regarding the crosstabulation and frequency analysis on the big traffic accident spots, the curved road was recorded at 43.7%, the vertical slope-related factors were 60.7%, the curve radius of 0～24m was 57.2%, the superelevation of 0.1～2.0% was 83.9%, and...Lead moreFirst of all, regarding the crosstabulation and frequency analysis on the big traffic accident spots, the curved road was recorded at 43.7%, the vertical slope-related factors were 60.7%, the curve radius of 0～24m was 57.2%, the superelevation of 0.1～2.0% was 83.9%, and the one-way two-lane road was recorded at 49.1%. Also, the analysis on the vehicles showed that cars occupied 33.0%, trucks 20.5%, and buses 14.3%. Among these factors, the installation of superelevation was estimated as the most influential factor on big traffic accidents. Secondly, by applying the Ordered Probit Model to 112 big traffic accidents, the Severity Model of Big Traffic Accidents was developed. The developed model helps predict the roads with high risks of big traffic accidents and come up with the strategies to reduce the severity of damages. Third, in the computer simulations where superelevation, the most influential factor on big traffic accidents, was adjusted at 2～6%, the installation of superelevation prevented big traffic accidents on more than 80% of the previous accident spots. And this result urges that the exceptional regulations on superelevation installation should be reinforced added to the standard principles of the road structure and facilities. Lastly, it is estimated that the damage cost of the big traffic accidents in 2003 has been reduced by 89.0% compared to the cost from 2005 to 2007 due to the installation of superelevation. Even when the damage cost of big traffic accidents in 2003 is compared with the installation cost of superelevation, the result shows the improvement over 3 times.

Abstract

Main purpose of pavement of the highway is to provide the safe and efficient surface of the road to the vehicles. In order to achieve the safe and efficient surface of the road, overall investigations after construction and every year inspection are performed. For mainten...Lead moreMain purpose of pavement of the highway is to provide the safe and efficient surface of the road to the vehicles. In order to achieve the safe and efficient surface of the road, overall investigations after construction and every year inspection are performed. For maintenance of the pavement, inspections with 7.6 profilermeter or ARAN(Automatic Road Analyzer) are used, but they are not suitable for local in situ monitoring of the roughness of pavement while they are widely used for long range roughness of pavement. Therefore in this research, as in situ monitoring of roughness of pavement, we propose the vibration monitoring method using fiber optic sensors. We designed and produced prototype fiber optic vibration sensor packages. We had a laboratory impact test with the sensors. The sensors showed very good responsibility to the impact and nice damping shape like other ordinary accelerometers. We also tried actual road test with the prototype vibration sensor. The ambient vibration by the vehicles was used for the experiment. We install the vibration sensors to the curbs. The data showed the good vibration patterns due to vehicles very clearly.

Abstract

The automatic control of vehicle clutch is a key technique of intelligent vehicle in ITS (Intelligent Transport System). Aimed at the features of non-linear characteristics, being prone to external disturbance and parameter uncertainty of clutch, it is difficult to contro...Lead moreThe automatic control of vehicle clutch is a key technique of intelligent vehicle in ITS (Intelligent Transport System). Aimed at the features of non-linear characteristics, being prone to external disturbance and parameter uncertainty of clutch, it is difficult to control automated clutch engaging and disengaging process of Dual Clutch Transmission (DCT). Here, regarding a dry clutch system with Brushless Direct Current Motor (BLDCM) as the research subject, a sliding mode variable structure is adopted to realize the effective control of clutch displacement and the phenomenon of clutch chattering is alleviated by fuzzy controller. The simulation results show this sliding mode controller have a better displacement trace ability and robustness to the parameters variation compared to traditional PID control.

Abstract

KATECH has developed an unmanned vehicle in order to provide an accident-free T-car test facility for intelligent vehicle technology development such as Telematics, ITS and ASV(Advanced Safety Vehicle). The developed unmanned vehicle is controlled by a driving robot which...Lead moreKATECH has developed an unmanned vehicle in order to provide an accident-free T-car test facility for intelligent vehicle technology development such as Telematics, ITS and ASV(Advanced Safety Vehicle). The developed unmanned vehicle is controlled by a driving robot which can be rapidly installed in various types of automobiles with minor modification. The driving robot is consisted of accelerator/brake actuators, a steering actuator, a gearshift actuator, motor controllers, a main controller and wireless communication systems. The unmanned vehicle has three modes - remote control mode, replay mode and automatic path following mode. The speed control algorithm and the path following algorithm used for the unmanned vehicle are presented in this paper. The dynamic behavior of the unmanned vehicle is acquired from DGPS based RTK(Real-Time Kinematics) equipments without additional sensory systems, so the algorithms can be applied to different automobiles with various dynamic characteristics. The developed algorithm is tested through computer simulations and T-car test in the field. The T-car test was conducted in the PG(Proving Ground) of KATECH. The developed unmanned vehicle successfully demonstrated the reliable repeatability of path following with a considerable speed.

Abstract

Under the ubiquitous transportation environments, collection, creation, processing and provision of transportation information services required by transportation users is carried out actively and autonomously on the basis of a sensor network. As it is possible to impleme...Lead moreUnder the ubiquitous transportation environments, collection, creation, processing and provision of transportation information services required by transportation users is carried out actively and autonomously on the basis of a sensor network. As it is possible to implement two-way communication of Vehicle-to-Infrastructure (V2I) and Vehicle-to-Vehicle (V2V) from the ubiquitous transportation environments, it is possible to respond to interaction among individual vehicles. However, since field test for the ubiquitous transportation environments is not possible at present, it is desirable to use a microscopic traffic flow simulation for the research process of model reproducibility and validity verification, effect analysis of transportation operation and management strategies and the like. That is, since the ubiquitous-based transportation service infrastructure is built up, it is possible to use the microscopic traffic flow simulator which can do various simulations for the demand-oriented operation and management strategies and can implement transportation environments over control of individual vehicles. This paper proposes a development of microscopic traffic flow simulation test-bed which can be used in establishing various operation and management strategies to be applied to minimizing traffic congestion of uninterrupted flow and to keeping stable traffic flow under the ubiquitous transportation environments and used for effect analysis. It is decided that the implementation of simulation test-bed environment based on ubiquitous transportation can provide an analysis environment in which various experiment and researches can be carried out in terms of traffic flow and safety by properly responding to interaction among individual vehicles based on V2I and V2V communication.

Abstract

Development of VR and T-car Based Testbeds in KATECH for ASV and Telematics Si-bok Yu1), Sooyoung Lee,2) Moonsik Kim,3) Taeseung Kim,4) JinMyung Woo,5) Dongjun Shin6) 1) Senior Researcher, 2) Research Fellow, 3)~6) Researcher, KATECH 74 Yongjung-Ri Pungse-Myun, Chonan, Ch...Lead moreDevelopment of VR and T-car Based Testbeds in KATECH for ASV and Telematics Si-bok Yu1), Sooyoung Lee,2) Moonsik Kim,3) Taeseung Kim,4) JinMyung Woo,5) Dongjun Shin6) 1) Senior Researcher, 2) Research Fellow, 3)~6) Researcher, KATECH 74 Yongjung-Ri Pungse-Myun, Chonan, Chungnam, Republic of Korea 041) 559-3080, 041) 559-3069, sbyu@katech.re.kr ABSTRACT For the increasing demand of reliable test environment of ASV and Telematics, KATECH has developed VR(Virtual Reality) and T-car based testbeds. The VR based testbed is consisted of a KAAS(KATECH Advanced Automotive Simulator) system which is the largest DS(Driving Simulator) in Korea, several different HILS systems that can provide HS/LS CAN, LIN, MOST, FlexRay, TCP/IP, Analog and digital I/O, a GPS simulator system, CDMA/WCDMA simulator systems, a IR-DSRC simulator system, a compact size DS for multi-vehicle simulation, a stereo camera based eye tracker and a bio signal analyzing device. The T-car based testbed is consisted of an unmanned test vehicle, a driving robot, a DGPS based RTK system, WCDMA/W/LAN/DSRC simulators, HILS systems, road side optical network, road side equipments, several T-cars, laser scanners, a wide-angle eye tracker and others. Using the VR based testbed, completely repeatable crash-less test environment is provided for driver, ASV ECU, telematics OBD, black box, software and service server. Also the T-car based testbed provides the repeatable casualty-free test environment for V2I/V2V warning/control systems, ASV systems, telematics, black box and related software. The paper includes the experiment result of T-car based testbed for LDWS and FVCWS systems.

Abstract

Presently, the collection of traffic informations is done through installation and operation of various vehicle detecting devices, such as loop detector, image detector and radar detector, there is a growing tendency of use of non-burial type image detector due to inconve...Lead morePresently, the collection of traffic informations is done through installation and operation of various vehicle detecting devices, such as loop detector, image detector and radar detector, there is a growing tendency of use of non-burial type image detector due to inconvenience of installation and hardship of maintenance that burial type gives in Korea. However, image detector also in reality is facing the emerging performance related problem such as responding too sensitively to weather, environment, etc. In order to improve the quality of traffic information, we intend to utilize identification information obtained from DSRC-based wireless communication terminal which is mounted on board of car and communicates with the road side equipment of electronic toll collection system, called Hi-Pass system in Korea, of roadside. Since Hi-Pass service start of operation in June 2005, Hi-Pass terminals were set up 3.4 million units and the rate of Hi-Pass traffic is up to 40% of highway traffic as of Nov. 2009, and in the case of capital region toll gates, the rate of use reaches as much as 50%, one car per every two cars. In this paper, we analyze sample size that is needed to provide real time traffic information by using real experiment in metropolitan area, and evaluate the effects by comparison with results obtained using the conventional system.

Abstract

Transportation management center (TMC) operations need to enhance the ability of operators to mange traffic in a more responsive and effective way from real-time traffic flow data. The traffic data collected on an actual road network are sent to the TMC for collection and...Lead moreTransportation management center (TMC) operations need to enhance the ability of operators to mange traffic in a more responsive and effective way from real-time traffic flow data. The traffic data collected on an actual road network are sent to the TMC for collection and then provided to various information provision media (Traffic information board, VMS, ARS, etc.) through primary and secondary information processing. However, accuracy for the traffic information extracted from such systems has not been clearly known, and one of the main reasons results from reliability for ground truth (GT). In order to verify accuracy and reliability for the traffic information processed in the TMC, microscopic traffic flow simulation will be used as GT, unlike the general methods. This paper proposes using microscopic traffic flow simulation as an alternative for improving the limitations in the ground truth survey (GTS). The main objective of this paper is to examine a feasibility of microscopic simulation in order to improve the reliability for the GTS. The microscopic traffic flow simulation can extract vehicle detection data through simulation considering various traffic environments. In particular, the simulation is advantageous in that it is possible to extract spot traffic data, space traffic data, vehicle trajectory data and the like by preparing various scenarios considering detection system types, traffic, geometry, signal operation, etc. Therefore, it is decided that the microscopic simulation would be highly usable as an alternative to the GTS in terms of efficiency and reliability if it simulates the traffic situation in the real world as similar as possible.

Abstract

As a new paradigm for investigation and maintenance & operation of road facility, now is time we need new type of maintenance & operation system going beyond the existing 2 dimensional numeric map. That is, establishment of a system, which can maximize business efficiency...Lead moreAs a new paradigm for investigation and maintenance & operation of road facility, now is time we need new type of maintenance & operation system going beyond the existing 2 dimensional numeric map. That is, establishment of a system, which can maximize business efficiency of maintenance & operator of road facility possible to secure revelation of the object facility of management and to provide visual convenience by applying element technology which can connect video image information filmed on real-time and 3D location information of already established corresponding facility, is necessary.

Abstract

Taxi service is featured with convenience, speediness, door-to-door, privacy and comfort; so it has become a popular mode in urban area. Many researchers had established models to analyze the taxi market under a unitary cost and demand assumption. To realize the differenc...Lead moreTaxi service is featured with convenience, speediness, door-to-door, privacy and comfort; so it has become a popular mode in urban area. Many researchers had established models to analyze the taxi market under a unitary cost and demand assumption. To realize the difference features of taxi market between peak and off-peak hour, this study aims to develop a mathematical model involving multiple period fares and the idle cost. In this study, we utilize the operation data of taxi market in Taipei Metropolitan Area as a case and provide some numerical results of optimal equilibrium in each time period. The consequence shows that in order to maximize the social welfare and balance the revenue and expenditure, the optimal fare in peak, off peak and midnight will be 1.68 US$/km, 1.06 US$/km, 0.97 US$/km respectively, the optimal vacancy rate will be 40.0%, 33.3%, 27.7%, and the fleet size of taxicabs in Taipei metropolis should be 37,837.

Abstract

The fuel is not injected when the driver doesn't push acceleration pedal of a vehicle with engine speed higher than about 1,500rpm in mid speed range. This is called "fuel-cut function" and almost every modern vehicle is equipped with this function. This is activated on d...Lead moreThe fuel is not injected when the driver doesn't push acceleration pedal of a vehicle with engine speed higher than about 1,500rpm in mid speed range. This is called "fuel-cut function" and almost every modern vehicle is equipped with this function. This is activated on downhill part of roads most often. Therefore the vehicle exhausted CO2 can be zero if the driver could recognize this downhill part of roads. The reduction rate of CO2 using this fuel-cut function in the downhill part of two different roads was measured in this study. The reduction rate is about 4% and this rate could be higher if optimized for different declined angle or the length of downhill part of roads. And this fuel-cut driven part of roads can be used in road painting policy for reduction of vehicle exhausted CO2.

Abstract

We developed a revolutionary signal processing technology to enhance installation ability of radar and achieved high angle resolution even with a small aperture. This paper describes two technologies that are Holographic Beam Synthesis and Super Resolution Algorithm (PRIS...Lead moreWe developed a revolutionary signal processing technology to enhance installation ability of radar and achieved high angle resolution even with a small aperture. This paper describes two technologies that are Holographic Beam Synthesis and Super Resolution Algorithm (PRISM) to miniaturize the radar. Further in this paper, we report on the Long Range Radar (LRR) achieved by using these technologies and the experiment results for effectiveness confirmation. We do not only achieve high installation ability of radar but this radar also applies to various systems by a little change of software and hardware.

Abstract

This study addresses a method to determine the prioritization of the existent approved projects to implement based on the criteria and the available budget in Ministry of road and transportation of Iran. Significant budget are allocated to the main road construction proje...Lead moreThis study addresses a method to determine the prioritization of the existent approved projects to implement based on the criteria and the available budget in Ministry of road and transportation of Iran. Significant budget are allocated to the main road construction projects every year in Iran. However, the assigned value is obviously less than the required budget to implement all projects. As a result of this, the optimal distribution of credits among the candidate projects and electing the prior projects to implement is considered as a serious problem. If the candidate projects are implemented based on a precise prioritization, the maximum efficiency of assigned budgets and credits can be acquired. It is clear that to achieve the best alternative for implementation, the candidate projects should be compared with one another. Although analyst can prioritize a few projects with small number of criteria subjectively; however, it is impossible when many projects or criteria are taken into account. In this situation, one should utilize the prioritization techniques to determine project’s precedence based on the criteria affecting on the prioritization. This research aims to present a methodology to prioritize the main road construction projects in the ministry of road and transportation. For this, first, the criteria affecting on the prioritization are identified and then an appropriate multi criteria decision making technique is utilized to determine the precedence of the main road construction projects. A prototype was implemented in this research to determine the project ranks base on many criteria information as input.

Abstract

One of the major challenges in the logistic sector is to deliver cost effective solution in the management, tracking and deployment of a large fleet of vehicles or mobile assets. The innovative use of technologies is much desired as to meet the diverse needs of the variou...Lead moreOne of the major challenges in the logistic sector is to deliver cost effective solution in the management, tracking and deployment of a large fleet of vehicles or mobile assets. The innovative use of technologies is much desired as to meet the diverse needs of the various stakeholders in logistic business. In collaboration with a local taxi company, ComfortDegro, a fully operational fleet management system was successfully implemented using state of the art technologies including GIS, GPS and GPRS to achieve innovative business objectives for taxis business and operations. In general, the project seeks to address the following objectives: (i) Improved Customer Service; (ii) Improved Driver Productivity; (iii) Enhanced operational efficiency. Hence, innovative features are desired as to make booking of taxis easier, faster and reliable; and at the same time to provide more value added services to customers. Commissioned in 2006, the first fleet of 5300 taxis were operated under this system. Thereafter, the system was subsequently expanded to enable the additional fleet of 11,000 taxis to be under the same platform. The system was deployed with innovative solutions such as bureau services implementation, use of customer profiling and pickup location prediction, Over-the-air downloading/uploading facilities and also voice streaming in handling of emergency situations from vehicle to control centre. With the above innovative features and also the ability to better utilize the vehicles to match bookings has enabled more people to book taxis successfully. This resulted in an increase of booking of taxis. Hence the resulting cost savings and effiicient operations improvement achieved testify to the successful use of technology in delivering innovative business solutions to ComfortDelgro taxis business. The same innovative technology solutions can be deployed to other businesses in logistics and fleet management in Singapore as well as overseas.

Abstract

This paper is the result of a recent comparison of TETRA (TErrestrial Trunked RAdio) and DMR (Digital Mobile Radio ETSI TR 102-361) trunking technologies. Significant and worldwide deployments of these technologies are expected over the next few years into ITS application...Lead moreThis paper is the result of a recent comparison of TETRA (TErrestrial Trunked RAdio) and DMR (Digital Mobile Radio ETSI TR 102-361) trunking technologies. Significant and worldwide deployments of these technologies are expected over the next few years into ITS applications relating to Public Transport communications solutions. It is therefore worthwhile to consider the benefits and the potential shortcomings of each of these radio communications standards. Public Transport requires radio to provide a range of both voice and data (ITS) services. These services might include such applications as timetable compliance, traffic signal priority, real time passenger information messaging, sign clear down and inter-modal transfer protection.

Abstract

The tourism industry has come into focus in recent years as a representative market for consumption activities in Japan. As lifestyles have changed, so have forms of travel. Currently, there is a shift toward forms of tourism that offer a high degree of freedom, such as a...Lead moreThe tourism industry has come into focus in recent years as a representative market for consumption activities in Japan. As lifestyles have changed, so have forms of travel. Currently, there is a shift toward forms of tourism that offer a high degree of freedom, such as away from group travel towards individual travel and away from public transportation towards private automobile transportation. Such changes require a diversification of services. This paper focuses on efforts facilitating car-based tourism, which is expected to be the primary mode of tourism into the future. We examine problems related to car-based tourism and suggest possible ways for using intelligent transport systems (ITS) as new tools for facilitating tourism-related services. We also examine and consider a service model that will ensure the satisfaction of both visitors and recipients.

Abstract

The efficiency and safety of road traffic is affected by weather conditions adverse directly. This paper, in order to find out the impact of the severe weather upon the traffic, study mostly how to design for a new experimental environment and working platform. Through th...Lead moreThe efficiency and safety of road traffic is affected by weather conditions adverse directly. This paper, in order to find out the impact of the severe weather upon the traffic, study mostly how to design for a new experimental environment and working platform. Through this experimental environment and working platform, diverse experiments include variable visibility and road status (dry, moist, wet, ice, snow), would be simulated; variable experimental data that we need would be obtained. It can analyses the impacts on volume and speed of road traffic under variable weather conditions.

Abstract

By constructing the different levels of fog and rain environment, this study first researches the drivers’ eye movement trajectory when they drive on the road. Then analyzes the process of driver's visual recognition when they face at the different types of traffic signs,...Lead moreBy constructing the different levels of fog and rain environment, this study first researches the drivers’ eye movement trajectory when they drive on the road. Then analyzes the process of driver's visual recognition when they face at the different types of traffic signs, variable message signs (VMS), obstructions in the different types of environment, and the impacts of the different fog and rain environment on the driver's visual recognition. Finally, the study establishes experimental methods and operational processes of drivers’ visual recognition for different types of fog and rain environment.

Abstract

Vehicle fuel consumption increases as driving speed, engine displacement and road surface roughness goes up. But the relation between these factors is not formulated yet. If the vehicle fuel consumption can be calculated for driving speed, engine size and road surface rou...Lead moreVehicle fuel consumption increases as driving speed, engine displacement and road surface roughness goes up. But the relation between these factors is not formulated yet. If the vehicle fuel consumption can be calculated for driving speed, engine size and road surface roughness, it will be very helpful for road construction, vehicle driving schedule and transportation policy. Fuel consumption was measured for different driving speed, engine size and road roughness in this study. The test driving speeds are 40, 60, 80, 100km/h and engine size is 1600, 2000, 2700cc. The fuel consumption was measured on three different road and the roughness index is 2.38, 2.45, 6.23m/km. The fuel consumption was formulated for speed, engine size and road roughness with these test results.

Abstract

Count-Down Timer Display is used as a tool for informing drivers, regarding the amount of remaining time until the end of each phase and changing the traffic signal color. This system is relatively new and is utilized widely to traffic management in some cities of Iran su...Lead moreCount-Down Timer Display is used as a tool for informing drivers, regarding the amount of remaining time until the end of each phase and changing the traffic signal color. This system is relatively new and is utilized widely to traffic management in some cities of Iran such as Tehran. Although the implement is not almost common in the developed world's cities, according to study done, it has a considerable effect on the drivers behavior and part of delay reduction at the crossroads. The research used the field study, stating differences in the driving behavior in the intersection, which is equipped by displaying the remaining time in compare of the ones without the display. In conclusion, the system can reduce start delay totally. Finally, the saving time was calculated, it has been proven the efficiency of the system. Also, this utility can be recommended to use in other cities.

Abstract

An inefficient navigation structure can cause several problems such as human cognitive load and information overloading. The area of intelligent and adaptive user interfaces has been of interest to the research community for a long time. Much effort has been spent in tryi...Lead moreAn inefficient navigation structure can cause several problems such as human cognitive load and information overloading. The area of intelligent and adaptive user interfaces has been of interest to the research community for a long time. Much effort has been spent in trying to find a stable theoretical base for adaptivity in human-computer interaction Adaptive user interfaces assist users in accomplishing tasks in an application and construct a model of the user's preferences so as to serve them better in the future. Examples include systems that filter traffic alerts, recommend bus routes, and so on. It reduces the load of the cognitive ability and improves information processing ability of human.[3] This approach to personalized services is relatively new but has great potential for improving the effectiveness of human-computer interfaces. Transportation is a significant area where adaptive user interfaces can be of great use. In this study, the Adaptive User Interface is applied to the Bus Information Terminal(BIT) which is one of communication equipment installed at bus stops. We had developled the information terminal for transit use and it has two touch screen typre LCDs as means of information display and user input. One LCD broadcasts constant traffic and transit information to the public and other displaurney to the information they searched. If predertermined data is available, then analyze unspecified individuals' preferences to design more efficient menu structures in the future use. The purpose of this study is the implement AUI to bus information termianal. It will be based on analysis of unspecified individuals' preferences from the termianl. The usage history was analyzed and optimum menu structure was designed and implemented. This include the periodic movement of the interfaces in each or equal layer of menu tree of the BIT.

Abstract

In recent, big cities around the world are struggling with environmental pollution worsened by rapid economical development, and global warming causes of fog and yellow sand to frequently occur. Fog which occurs by substantial temperature differences. Since the blanket of...Lead moreIn recent, big cities around the world are struggling with environmental pollution worsened by rapid economical development, and global warming causes of fog and yellow sand to frequently occur. Fog which occurs by substantial temperature differences. Since the blanket of fog changes every moment and it is practically impossible to measure a visibility distance in real time in fog, authors focused on the operating principles of visibility meter and the reliability test of a visibility distance.

Abstract

In general, drivers obtain more than 90% of driving-related information by visual-perceptual activities. The visual abilities relate to vision, visual field, adaptation and daze. In fog, no matter how much high their vision may be, it is impossible for drivers to take a v...Lead moreIn general, drivers obtain more than 90% of driving-related information by visual-perceptual activities. The visual abilities relate to vision, visual field, adaptation and daze. In fog, no matter how much high their vision may be, it is impossible for drivers to take a visual field forward, and then they are likely to be the blind. That is why it appears to have the high rate of rear-end collisions in a foggy weather. Since a visual distance is changed every moment in fog, it is the most important to effectively provide drivers the information of the road. The Fog Detect & Warning System (FDWS) comprises a visibility meter, a warning lamp, a vehicle detector, and control algorithm. This study estimated the effectiveness of FDWS on speeds according to several conditions (visibility distance and the system on and off). FDWS which was implemented in the four-lane divided National Highway 37, Gyeong Gi-Do South Korea is additionally equipped with a leading vehicle control and control system.

Abstract

The global community faced on a challenging goal to reduce greenhouse gas emissions and improve energy efficiency to deal with climate changes. The transportation sector contributes approximately 30% of the total energy usage, which is mostly attributed to petroleum-based...Lead moreThe global community faced on a challenging goal to reduce greenhouse gas emissions and improve energy efficiency to deal with climate changes. The transportation sector contributes approximately 30% of the total energy usage, which is mostly attributed to petroleum-based products such as gasoline and diesel fuels. Also, significant amount of greenhouse gas emissions that linked to climate change, are attributed to the transportation sector. However, it would be difficult to imagine our modern life without motorized transportation. One of the key strategies in improving vehicle fuel efficiency is obtaining more miles from each liter of fuel. Eco-driving was emerged as a tool that can improve actual fuel efficiency. While there are different ways to evaluate the smart driving techniques of eco-driving, there are a limited numbers of studies that quantified the benefits of eco-driving on the fuel usage and greenhouse gas emissions. This study examines the energy and environmental impact of eco-driving techniques using traffic simulation models in combination with state of the art fuel consumption and emission models. The results conclude that eco-driving may result in positive impacts on vehicle fuel consumption and emission rates if drivers do not use aggressive acceleration levels to speed up to their desired speeds. The results also demonstrate that by eliminating sharp acceleration maneuvers significant energy and emission savings can be achieved. Consequently, significant improvements in air quality and energy consumption are achievable through driver education.

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With the continuous development of Electronic Toll Collection （ETC） technology, domestic traffic capacity on the ETC lane, security, performance, intelligence and so on inside the nation,the choice of ETC lane configuration mode has become a big factor of ETC.This disse...Lead moreWith the continuous development of Electronic Toll Collection （ETC） technology, domestic traffic capacity on the ETC lane, security, performance, intelligence and so on inside the nation,the choice of ETC lane configuration mode has become a big factor of ETC.This dissertation is based on a variety of the actual situation from a security point of view, lane communications capabilities, lane intelligence, input costs, maintenance costs, social effects, economic effects and other aspects of a detailed to analyse，presented three ETC lane configuration modes which suit the situation of China firstly，and to analyze the differences、 the advantages and disadvantages of these three ETC lane configuration modes.

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There are many new variable message signs on major roads in Beijing, which provide more traffic information for road drivers than that of before. However, what is the impact of the new VMS is not clear. This study employed 1075 questionnaires to investigate effects of VMS...Lead moreThere are many new variable message signs on major roads in Beijing, which provide more traffic information for road drivers than that of before. However, what is the impact of the new VMS is not clear. This study employed 1075 questionnaires to investigate effects of VMS on route choice. Firstly, a statistical analysis of questionnaire data, which used multi-category ordinal logistic models, revealed that those who highly trust, frequently concern VMS will change route frequently according to VMS. Secondly, multiple linear regression models were developed to reveal that the information of original path, substitution path and high-grade path will affect significantly the probability of route diversion. Thirdly, a survey of drivers’ actual responses to new VMS showed that more than 80% drivers think that new VMS is useful and 73% drivers trust the information. The paper will provide scientific suggestions on the assessment of new VMS.

Abstract

In recent years, with the large-scale construction, Chinese highway network expands rapidly. By the end of 2009, the mileage of highway in China has grown up to more than 65,000 kilometers. With the raise of traffic conditions and people's living conditions, the traffic v...Lead moreIn recent years, with the large-scale construction, Chinese highway network expands rapidly. By the end of 2009, the mileage of highway in China has grown up to more than 65,000 kilometers. With the raise of traffic conditions and people's living conditions, the traffic volume is increasing rapidly. And the main task is changing from construction to service and management improving. The raise of the network scale and the traffic volume bring new challenges. Especially in the case of emergency, e.g. traffic accidents, natural disasters, etc. How to deal with the emergencies quickly and effectively has become an important research subject. In the whole emergency response and rescue system, the communication support system is an important aspect of the subject. How to construct a robust and flexible emergency communication support system with advanced IT technology and communication technology, which can meet the needs of emergency response system of highway and provide strong support to the rescue work, is one of the hottest topics in ITS study. This paper studied the status quo of Chinese highway communication system, analyzed the functional demands of rescue work, and presented a construction scheme of Chinese Highway Emergency Communication Support System.

Abstract

It is well known that vehicle fuel consumption is reduced with the electronic toll collection (ETC) technology, but there is no specific statistical data about the quantity of fuel can be saved. In order to get accurate data, an experiment was performed. This experiment t...Lead moreIt is well known that vehicle fuel consumption is reduced with the electronic toll collection (ETC) technology, but there is no specific statistical data about the quantity of fuel can be saved. In order to get accurate data, an experiment was performed. This experiment takes the family cars with 1.4 liter displacement as the experimental object. The fuel consumption was collected as the vehicle pass by the manually toll collection lanes and ETC lanes. Through the analysis of experimental results, we can see that ETC technology can bring to us very considerable economic benefits.

Abstract

The Council of the International Civil Aviation Organization (ICAO) adopted the World Geodetic System-1984(WGS-84) on March, 1989 as the standard geodetic reference system for future navigation with respect to international civil aviation. Currently, Korean government is ...Lead moreThe Council of the International Civil Aviation Organization (ICAO) adopted the World Geodetic System-1984(WGS-84) on March, 1989 as the standard geodetic reference system for future navigation with respect to international civil aviation. Currently, Korean government is preparing a standard equivalent to ICAO WGS-84 in Korean environments. This paper is to introduce related regulations regarding to WGS-84 for the East Asian region and to propose to events profitable in the Korea aviation industries.

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The paper reviews the progress of the road weather information system (RWIS) development, analyses the system components and main application scope of RWIS, and summarizes the experience and trends of the research and applications in the developed countries in this field....Lead moreThe paper reviews the progress of the road weather information system (RWIS) development, analyses the system components and main application scope of RWIS, and summarizes the experience and trends of the research and applications in the developed countries in this field. The paper comprehensively reviews the progress of RWIS development on Chinese highways and summarizes the problems and gaps of RWIS research and applications on Chinese highways. Combining the on-going research and demonstration projects, the paper gives a set of recommendations and proposals to promote the application of RWIS on Chinese highways.

Abstract

License Plate Recognition System can collect traffic information at some location including vehicle plate numbers, arrival time and vehicle classes. So LPR system plays an increasingly important role in urban traffic management with the application of the traffic behavior...Lead moreLicense Plate Recognition System can collect traffic information at some location including vehicle plate numbers, arrival time and vehicle classes. So LPR system plays an increasingly important role in urban traffic management with the application of the traffic behavior, especially Travel Time Characteristic, of vehicles. First, after a careful analysis on the travel time data from LPR system of Beijing, this paper provides the according method of data de-noising. So the noise from data can be removed and the higher quality data can be achieved. Then, statistics analysis was carried out about the number and the travel time of different vehicle classes, including Private Car, texi, bus, and police car. At last, the trip characteristic of multiple vehicle classes can be generalized.

Abstract

study on traffic analysis support system by use ITS center gethering and modified DBstudy on traffic analysis support system by use ITS center gethering and modified DB