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Abstract

This paper demonstrates a framework of the intelligent green travel service (I-GTS) based on context awareness intermodal connectivity for public transit transfer information and facilities related to objects including bus stops, access points to train stations, vehicles,...Lead moreThis paper demonstrates a framework of the intelligent green travel service (I-GTS) based on context awareness intermodal connectivity for public transit transfer information and facilities related to objects including bus stops, access points to train stations, vehicles, and other points of interest. This study has been conducted under a national ITS project which develops test and evaluation methodologies for facility and information design in the test-bed center. The results from this approach yield the proposed system applicable to the personalized service on demand for public transport users along the technologies and infrastructure in ubiquitous society, where a variety of service contents and business models has been considered to be a better quality service for providing I-GTS in the near future.

Abstract

Bicycle is one of the most important eco-friendly transport mode which can cope with global warming and ICTs(information and communication technologies) on bicycles became a dominant factor for success to the spread of bicycles to public. In this paper, conceptualization ...Lead moreBicycle is one of the most important eco-friendly transport mode which can cope with global warming and ICTs(information and communication technologies) on bicycles became a dominant factor for success to the spread of bicycles to public. In this paper, conceptualization and classification of ubiquitous based bicycle(U-bike) services are fulfilled and its adoptability was examined using AHP(Analytic Hierarchy Process) method. Group capabilities technique was invited to eliminate bias on appraisal. 12 U-bike services were conceptualized to U-bike information system, U- bike cycling services U-bike and transit system, U-public bike system and U-bike management and additional services system. According to analysis of criteria for services, economic factors such as profitability has revealed as more important ones than policy factors and technology factors. Also, U-service with highest of adoptability was 'bike and ride' service which can link bicycle to transit. 'Prevention system from abandonment and theft' and 'public bike system' similar with Velib system in Paris were also appraised to very important services in U-city. These services are expected to eliminate current limitation on using bicycles. Also, conceptualization and adoptability of U-bike services based on scientific methods can be a start point to promote bicycle use as an eco-friendly transportation mode in U-City.

Abstract

Recently, buses and trains are some of the major public transportations. Especially buses are the transportation that can be used the most frequently and easily by users. In fact, buses account for a higher percentage of the public transportation comparing with other ones...Lead moreRecently, buses and trains are some of the major public transportations. Especially buses are the transportation that can be used the most frequently and easily by users. In fact, buses account for a higher percentage of the public transportation comparing with other ones not only in the major cities but in the minor cities. According to the survey of the bus environment for the disabled and the elderly in terms of considering convenience and accessibility in 2009, it says that the bus environment suitability for people is just up to 25.5%. Therefore we expect this should take priority over all other parts of transportation. Buses are considered as more economical and eco-friendly form of transportation and government establishes and carries many policies for improving the service of using the bus; the installation of the bus-shelter and the provision of BIS(Bus Information Systems). Universal Design, however, is not carried out yet because of the lack of the study on the safety zone of the bus stop. Therefore We suggest the set-up of the bus safety zone and present the Universal Design. We carried out a survey of bus users' satisfaction with bus environment targetting at unspecified individuals in HwaSung city.

Abstract

Queue length management is the need strategy at signalized intersection, in order to increase signal operation efficiency with preventing spillback and offer equity on both directions. The objectives of this queue control are to minimize the difference of queue length, an...Lead moreQueue length management is the need strategy at signalized intersection, in order to increase signal operation efficiency with preventing spillback and offer equity on both directions. The objectives of this queue control are to minimize the difference of queue length, and to minimize the summation of queue length at signalized intersection. For satisfying these goals, we devise the queue control model with feedback control and optimal control. Feedback control has a goodness to decrease an impact of transient behavior generated by insufficiency data information. It is possible to increase queue length while only considering the balance of queue length on both directions, so we apply optimal control to this queue model. We evaluate the effectiveness to analyze this model on various traffic volume scenarios by comparing to Webster’s green split method. Our results reveal that queue length decreased by keeping balance, the period of queue elimination and the range of queue spread decreased.

Abstract

One of new public transportation systems which was named Bimodal Tram is driven by electric power and guided by automated system on the track with magnets inserted into the ground. Its power source is obtained from engine generator or fuel cell system. It is designed to p...Lead moreOne of new public transportation systems which was named Bimodal Tram is driven by electric power and guided by automated system on the track with magnets inserted into the ground. Its power source is obtained from engine generator or fuel cell system. It is designed to provide railway service without rails and overhead wires. The bimodal tram is currently powered by hybrid of CNG engine generator and lithium battery for practical use, but will be reshuffled with fuel cell to realize zero emission. The automated guidance system enables its precise docking to the station at the distance of five centimeters so that passengers on wheel chair or with stroller can have easy access without any barrier. The body shells and floor panels are made of composite materials. The bimodal tram project is performed along with its infrastructure project to secure safety through monitoring the whole system and communicating each other in real time. The cutting-edge technologies embedded into the tram make it provide flexible service and comfortable ride with intelligent operation of the system.

Abstract

The main aim of this study is to quantify the likelihood of automobile accidents by collision. Specifically, we seek a way to estimate the probability of collision (POC) from the driver’s reaction time (RT) distribution. Since RT distributions change with driver’s arousal...Lead moreThe main aim of this study is to quantify the likelihood of automobile accidents by collision. Specifically, we seek a way to estimate the probability of collision (POC) from the driver’s reaction time (RT) distribution. Since RT distributions change with driver’s arousal states, we propose measurement of eye-opening rate (EOR), together with RT, as an index of arousal level, estimation of RT distributions for low and high EOR, and computation of POC separately from these distributions. To examine the validity of our proposed method, we conducted an experiment using a driving simulator. We fitted ex-Gaussian functions to RT data to estimate their distributions. The results showed that the fitting was quite successful for all data, whereas there were marked individual differences in the way POC changed with EOR.

Abstract

This research was verified detection way of intercept vehicles and performance evaluation after system installation using image detector as detection way of ground installation. By image recognition algorithm was on the trace of moving orbit of violation vehicles for dete...Lead moreThis research was verified detection way of intercept vehicles and performance evaluation after system installation using image detector as detection way of ground installation. By image recognition algorithm was on the trace of moving orbit of violation vehicles for detection way of intercept vehicles. When moving orbit is located special site, utilized geometric image calibration and DC-notch filter. These are cognitive system of license plate by making signal. Then, Bright Evidence Detection and Dark Evidence Detection were applied to after mixing. It is applied to way of Backward tracking for detection way of intercept vehicles. After the field evaluation of developed system, it should be analyzed the more high than recognition rate of minimum standards 80%. It should rise in the estimation of the site applicability is highly from now.

Abstract

In this paper we deal with fundamental framework for the railway IT convergence. Until now, technology development related to railway systems focused on required technology for its own system. And the technology has not systematically developed in reality in view of techn...Lead moreIn this paper we deal with fundamental framework for the railway IT convergence. Until now, technology development related to railway systems focused on required technology for its own system. And the technology has not systematically developed in reality in view of technology convergence. For the original purpose of the railway system, the railway system ensures that the rapid mobility of passengers through systematic and organic unification of related technology such as safety, efficiency, customer service, maintenance etc. And, it is said that such a systematical unification can be attained by integrated management and processing of related information. Information-unified fundamental framework for the railway IT convergence can be made up of four layers as follows; sensor monitoring system sector, function-specific data model construction area, application program sector, decision-making sector. In this paper, we propose fundamental framework for the railway IT convergence and study on functions and characteristics of each subsystem consisting of framework.

Abstract

Applications supporting ITS/Telematics need vehicle information data through an in-vehicle interface access. Up to now, vehicle information has been offered by vehicle manufacturers for proprietary services to a single service provider for delivery of these services in a ...Lead moreApplications supporting ITS/Telematics need vehicle information data through an in-vehicle interface access. Up to now, vehicle information has been offered by vehicle manufacturers for proprietary services to a single service provider for delivery of these services in a specific market. This inflexibility made it difficult for ITS/Telematics service providers to provide advanced services based on vehicle information. A more open and standardized approach to provide vehicle information for ITS/Telematics Services has clear benefits for marketplace, but previous standardization efforts focused on replacing existing protocols or adding new protocols for newly emerging services, rather than integrating them to overcome the barriers for adoption. In this paper we want to introduce the standardization efforts in ISO TC204 WG17 to specify a common software interface to a vehicle gateway integrated within the CALM architecture and easily exchange vehicle information data among nomadic and/or mobile device, vehicle gateway and ECUs. The VMG provides vehicle manufacturer/VMG supplier controlled access to vehicle data and functions. The ND software applications have a similar functionality compared to an Internet browser. The VMG concept is designed to fit two major use cases. One is the vehicle manufacturer engineered product designed into the vehicle at the time of the development of the vehicle. The second is the aftersales product designed by independent aftermarket tool suppliers. This product is an add-on for most of all vehicles which do not have built-in VMG functionality.

Abstract

This paper demonstrates the requirement of smart tolling systems for smart highway. In smart highway operators and drivers would be able to see in real time the information of traffic. The smart highway is next generation road aimed at Congestion Free, Stop Free and Accid...Lead moreThis paper demonstrates the requirement of smart tolling systems for smart highway. In smart highway operators and drivers would be able to see in real time the information of traffic. The smart highway is next generation road aimed at Congestion Free, Stop Free and Accident Free through ubiquitous traffic information services. This study defines requirements and functions for development of smart tolling system as a multilane free flow road charging systems. The smart tolling systems support toll collect, no overloaded vehicles, speed enforcements and so on base on wireless communication systems.

Abstract

The smart tolling system is advanced multilane free flow system aimed at any device and any communication. For these smart tolling services, the smart tolling system should be including in the integrated management system that is system/customer/data management. The exist...Lead moreThe smart tolling system is advanced multilane free flow system aimed at any device and any communication. For these smart tolling services, the smart tolling system should be including in the integrated management system that is system/customer/data management. The existing management system required plural operation devices to perform its own functions. However, under the smart tolling integrated management system, a single device carries out basic functions (settlement and operation & management). Additional functions are added through software. Also it can be remote control system for 24 hours non-stop management and include real monitoring system, advanced maintenance system and settlement system. This study defines functional requirements and designs S/W of integrated smart tolling management system

Abstract

We propose a motion stereo method using unscented kalman filter for a single wide-angle camera. Currently, a large number of accidental contacts happen in parking lots behind the statistics. To avoid such an accident, it is necessary to detect objects and pedestrians whic...Lead moreWe propose a motion stereo method using unscented kalman filter for a single wide-angle camera. Currently, a large number of accidental contacts happen in parking lots behind the statistics. To avoid such an accident, it is necessary to detect objects and pedestrians which may cause accidents. Our approach is to estimate depth to detect objects with rear view camera. The problem with rear view camera is low resolution for wide-angle camera. Moreover, the vehicle speed signal has large quantization errors due to slow movement while parking. These cause low accuracy in estimating depth of objects. In order to obtain high accuracy, we utilize a time-series filtering method, the unscented kalman filter. Unlike normal kalman filter, it is more suitable for non-linear time-series data caused by turning movements while parking. The experimental results demonstrate that the proposed method achieved high performance for an on-vehicle rear camera system in parking lot environment.

Abstract

Hot origin-destination (O-D) area is traveler frequently visiting places in a city. By analyzing it, traffic control department can obtain travel features and make public transport plan. Taxi company can use it for taxi dispatching. Also, for drivers without real-time tra...Lead moreHot origin-destination (O-D) area is traveler frequently visiting places in a city. By analyzing it, traffic control department can obtain travel features and make public transport plan. Taxi company can use it for taxi dispatching. Also, for drivers without real-time traffic data, the information is valuable as hot O-D area might be congested place to avoid. In this paper, we introduce a hot O-D area estimation method by using taxi GPS data. To detect hot O-D area efficiently, there are two key steps in our method which are effective O-D extraction and hot O-D clustering. This paper discusses the main idea of the proposed method and presents the preliminary result based on taxi GPS data in Beijing.

Abstract

The paper analyzed the main problems of freeway intelligence transportation development in Beijing, and brought out the freeway intelligent transportation system (FITS) planning methods. Based on the demand anlysis, research proposed the constitution and construction arch...Lead moreThe paper analyzed the main problems of freeway intelligence transportation development in Beijing, and brought out the freeway intelligent transportation system (FITS) planning methods. Based on the demand anlysis, research proposed the constitution and construction architecture of Beijing freeway intelligence transportation system (FITS) in short-term period and long-term period. The study will provide important theorical support and basis for the Beijing freeway intellectualized construction and information development in future years.

Abstract

This report introduces the research results of inter-vehicle communications（IVC) performed within the Japan Automobile Research Institute and Oki Electric Industry Co., Ltd. commissioned by the New Energy and Industrial Technology Development Organization (NEDO) "Researc...Lead moreThis report introduces the research results of inter-vehicle communications（IVC) performed within the Japan Automobile Research Institute and Oki Electric Industry Co., Ltd. commissioned by the New Energy and Industrial Technology Development Organization (NEDO) "Research and Development on Energy ITS Promotion Project/Automated driving and platooning". In FY 2009, our experiment of IVC for platooning using 5.8 GHz band radio wave in the field verified that highly frequent and highly reliable information exchange to maintain platooning is feasible. We also performed a radio propagation experiment in a tunnel of an express highway and verified the feasibility of communication. This report represents a summary of our research results.

Abstract

With safe drive support systems that employ road-to-vehicle communication and inter-vehicle communication, information is provided in order to call the driver's attention and avoid the inattention of drivers or the delay in their responses. In order to forecast to what ex...Lead moreWith safe drive support systems that employ road-to-vehicle communication and inter-vehicle communication, information is provided in order to call the driver's attention and avoid the inattention of drivers or the delay in their responses. In order to forecast to what extent such assistances for safe drive are effective in various traffic environments, it is necessary to simulate the provision of information by communication, driver's response and fluctuation of traffic flow at the same time. The development of simulators that can perform these operation in an integrated manner is expected. This report introduces our attempt to build an integrated simulator that operate on computers integrating simulators dedicated to factors such as traffic flow, communication and driver's behaviour.

Abstract

Unattended traffic enforcement equipment is widely used as an effective alternative for crackdown on violating the traffic regulations such as speeding, violating a traffic light in order to secure traffic safety. It is showed that this unmanned camera is effective to pre...Lead moreUnattended traffic enforcement equipment is widely used as an effective alternative for crackdown on violating the traffic regulations such as speeding, violating a traffic light in order to secure traffic safety. It is showed that this unmanned camera is effective to prevent accidents by leading drivers to keep the law at accident potential spot. However, there has been a concern that it can reduce its effectiveness due to accident migration as a result of changing driver’s driving manner and habits. Therefore this paper will analyze an accident migration and a range of effect depending on unattended traffic enforcement equipment operation. As a result, this paper will provide a reasonable index to set a range of accident migration effect as well as expanding of its eligibility to minimize accident migration which can be raised as a negative effect of unattended traffic enforcement equipment operation.

Abstract

Dilemma-free control is a method of controlling traffic signals to minimize the situations when drivers are caught in the dilemma zone. One important aspect of dilemma-free control is the understanding of drivers’ behavior involving the reaction time to take braking actio...Lead moreDilemma-free control is a method of controlling traffic signals to minimize the situations when drivers are caught in the dilemma zone. One important aspect of dilemma-free control is the understanding of drivers’ behavior involving the reaction time to take braking actions and the deceleration rate of a vehicle. However, there is a lack of empirical research on this critical issue. This paper describes a study of the effects of pedestrian traffic lights on the driver behaviors in the dilemma zone using a driving simulator. It is found that the driver’s decision in the dilemma zone is heavily influenced by the pedestrian traffic lights and vehicle’s distance to the stop line. Results of this study also show that there is no clear difference in vehicle approach speeds between those that stop for the signal and those that do not stop. The insight gained from this study can be applied to improve the existing dilemma-free control method.

Abstract

This paper describes a study of using probe data for traffic management. We equipped nearly one hundred taxies traveling around the center of Yokohama City with onboard units. The onboard units communicate via infrared beacons on the roadside to allow the collection of th...Lead moreThis paper describes a study of using probe data for traffic management. We equipped nearly one hundred taxies traveling around the center of Yokohama City with onboard units. The onboard units communicate via infrared beacons on the roadside to allow the collection of the probe data transmitted from the equipped vehicles. The results suggest that the probe data of only one hundred taxies can be successfully applied to traffic management if probe data are accumulated for sufficiently long periods of time and are used in combination with vehicle detector data.

Abstract

This paper reviewing the type classification of domestic/foreign Transfer Center in other researches, and classifies the Transfer Centers in Seoul based on “Transport system efficiency promotion act”. Evaluation and categorizing process of Transfer Center adopted the conc...Lead moreThis paper reviewing the type classification of domestic/foreign Transfer Center in other researches, and classifies the Transfer Centers in Seoul based on “Transport system efficiency promotion act”. Evaluation and categorizing process of Transfer Center adopted the concept of integral intermodal time and intermodal entropy. In this paper, three types of classifications are used. In addition, evaluation of each type of Transfer Centers in Seoul is done by reviewing the system of traffic connectivity between modes and field survey. After the result of reviews on selected Transfer Center analysis, the last selected site for data analysis is totally 19 places; seven in a Public Transportation linked type, seven in a Parking lot type and five in a Terminal type Transfer Center. Through this analysis, we proposed a way to improve the Transfer Centers in Seoul. However, nationwide researches are needed; due to the other characteristic of Transfer Centers can be found.

Abstract

Introduction of a Lane Control System with the goal of alleviating traffic congestions through short term increase in traffic capacity by allowing drivers to use the reinforced shoulder in sections where congestion and delays occur regularly during the rush hour and its e...Lead moreIntroduction of a Lane Control System with the goal of alleviating traffic congestions through short term increase in traffic capacity by allowing drivers to use the reinforced shoulder in sections where congestion and delays occur regularly during the rush hour and its effect on the operated section will be discussed in this paper. This will be accomplished by giving the drivers information on lane operation and route operation to enable them to take suitable actions and by providing operation information for corresponding lanes (Availability and speed limit) in a variable manner. It was done to alleviate repeated congestions and delays due to traffic increases during rush hours and weekends in sections of expressways managed by the Korea Expressway Corporation Gyeongnam Regional Headquarters in which congestions and delays occur regularly.

Abstract

This paper proposes the algorithm for advisory safety speed model based on real-time vehicle data collected from SMART Highway in South Korea. The advisory safety speed model is consisted within-vehicle driver information relating to adverse weather and road-surface data ...Lead moreThis paper proposes the algorithm for advisory safety speed model based on real-time vehicle data collected from SMART Highway in South Korea. The advisory safety speed model is consisted within-vehicle driver information relating to adverse weather and road-surface data which are real-time sensing through radar detector while traveling on SMART Highway. Also, it is related to real-time vehicle data, such as vehicle speed, RPM(round per minute), and fuel consumption rate etc., collected from OBDII - ECU(Engine Control Unit) equipment. The advisory safety speed model is consisted of two parts: One is the macro car-following model considering traffic parameter on highway and the other is the safe-stop-distance model considering road-surface data. To evaluate the new algorithm, we are using VISSIM for simulation the Highway communication network. This research is considered that a safer application during driving the highway. The purpose of the research is to prove the new safety related services which are applicable in SMART Highway.

Abstract

To ensure traffic safety, improve service levels of road. Under the theories guidance of Traffic engineering, Testing technology, Computer technology, Through survey and analysis the weather information collection device, gather the weather information of highway. Process...Lead moreTo ensure traffic safety, improve service levels of road. Under the theories guidance of Traffic engineering, Testing technology, Computer technology, Through survey and analysis the weather information collection device, gather the weather information of highway. Process the information with visual computer language-VB. Put the results obtained onto the variable message board for the driver in time, thus provide a reliable basis for the safety driving.

Abstract

This study demonstrates a methodology for systematic approach on implementation of transportation connectivity systems based on the fully networked car which provide a basis on national policies for traffic demand management along the green growth paradigm utilizing vehic...Lead moreThis study demonstrates a methodology for systematic approach on implementation of transportation connectivity systems based on the fully networked car which provide a basis on national policies for traffic demand management along the green growth paradigm utilizing vehicle-information technology (VIT) convergence. A concept of green-intelli travel society (G-ITS) is demonstrated according to the level of VIT application, which would facilitate dynamic policies on reducing the green house gas in transportation, i.e. vehicle access control in CBD, road congestion pricing, car sharing, integrated public transit charging, etc.

Abstract

We are developing "A Survey Simulator to Evaluate Safety Systems (ASSESS)". ASSESS can reproduce the 3D environment of a real-world intersection on a computer and to make vehicles (agents) that can run autonomously appear in this virtual intersection based on measurement ...Lead moreWe are developing "A Survey Simulator to Evaluate Safety Systems (ASSESS)". ASSESS can reproduce the 3D environment of a real-world intersection on a computer and to make vehicles (agents) that can run autonomously appear in this virtual intersection based on measurement data from traffic flow at a real-world intersection. ASSESS can output the number of traffic accidents and near-miss incidents by simulating this situation over a long period (e.g. several months). ASSESS evaluates the effects of active safety systems based on the change in the number of accidents and near-miss incidents according to the adoption rate of the active safety system. This simulator is the multi-agent system that consists of three programs; an environment model, driver model and vehicle model plus a control program that manages these models. The environment model is a program to generate the appearance schedule of agents in the virtual intersection based on the traffic flow data of real-world. The driver model is a program that simulates the driver's driving behavior with human error. The vehicle model is a program that calculates the agent's position based on this driving operation output by the driver model. In this paper, it is analyzed the vehicle's behavior in this virtual intersection reproduced with ASSESS by comparing with the vehicle's behavior that is observed in the real-world intersection. As a result, it was confirmed that ASSESS reproduces almost equal with the traffic flow measured in the real-world intersection by the comparison of the traveling time through the intersection.

Abstract

Future vehicle must be both driver-friendly and able to adapt to changes in the road’s conditions. The system is needed to adapt to both the driver and the circumstance for maximum convenience and safety. In order to solve these problems, this paper proposes an algorithm ...Lead moreFuture vehicle must be both driver-friendly and able to adapt to changes in the road’s conditions. The system is needed to adapt to both the driver and the circumstance for maximum convenience and safety. In order to solve these problems, this paper proposes an algorithm for developing smart vehicles. In this paper, it is simulated to compare the performance of a normal car with that of the algorithm-implemented vehicle in a potential accident. Through the computer simulation, it proved that the algorithm-implemented vehicle automatically adjusted the mirrors and seat for the maximum comfort and driver’s awareness of the circumstance.

Abstract

It is estimated.that　 gas mileage 10% (maximum) would be reduced If a　beacon receiver was added to VICS car navigation system． In 2009, VICS Center conducted a joint experiment with approximately 1,000 leased vehicles equipped with beacon receivers, and monitored trave...Lead moreIt is estimated.that　 gas mileage 10% (maximum) would be reduced If a　beacon receiver was added to VICS car navigation system． In 2009, VICS Center conducted a joint experiment with approximately 1,000 leased vehicles equipped with beacon receivers, and monitored travel data and fuel data. In this report, we report the effect carbon dioxide emissions reduction and fuel economy improvement.

Abstract

Recently, vehicles with a rear view camera have been increasing. The rear view camera can be utilized as a collision monitoring sensor from behind in driving scene. We have been developing the technology to prevent rear-end collision from backward by detecting an approach...Lead moreRecently, vehicles with a rear view camera have been increasing. The rear view camera can be utilized as a collision monitoring sensor from behind in driving scene. We have been developing the technology to prevent rear-end collision from backward by detecting an approaching vehicle using the image of a rear view camera. In the conventional methods, optical flow is often estimated for detecting an approaching vehicle. However, it is difficult to detect a distant vehicle because its motion is insufficient in the image. In this paper, we propose the improvement method of the distant approaching vehicle detection with accuracy from the top-view image, which is projected to the road plane using perspective transformation. The object in the top-view image moves at the proportional displacement to its speed. Furthermore, the width of the object is constant regardless of the distance from the host vehicle. Therefore, our method can provide easy detection and the accurate position of the distant vehicle. We show the details of the proposed method and availability by experiment using the model image.

Abstract

This thesis introduces the case where the Shizuoka Prefectural Police realized a combination of safety and smooth measures of the traffic flow by reducing the number of traffic accidents by half without congestion at an intersection of fluctuating traffic volume. This was...Lead moreThis thesis introduces the case where the Shizuoka Prefectural Police realized a combination of safety and smooth measures of the traffic flow by reducing the number of traffic accidents by half without congestion at an intersection of fluctuating traffic volume. This was achieved by introducing the movement control, which is not generally applied within Japan, for control of traffic signals and also revising the vehicle line structure and vehicle flow lines (signal phases). The movement control refers to a signal control method that changes the sequence of signal phases according to the traffic volume in each direction at an intersection. In Japan, this method is applied experimentally at two intersections only. For the first time in Shizuoka Prefecture, the Shizuoka Prefectural Police implemented the safety and smooth measures of the traffic flow by introducing the practical movement control at the "Susono IC intersection" located at the Susono IC gateway of the Tomei Expressway and also revising the lane structure and vehicle flow lines (signal phases). Operations of these measures were completed on April 1, 2009.

Abstract

As development of ITS technologies, the electronic toll collection (ETC) allows to develop diverse strategies for value pricing such as ERP, HOT lane, and FAIR lane system. A few developed countries have been applied these toll collection methods on the freeway and stored...Lead moreAs development of ITS technologies, the electronic toll collection (ETC) allows to develop diverse strategies for value pricing such as ERP, HOT lane, and FAIR lane system. A few developed countries have been applied these toll collection methods on the freeway and stored quite amount of data needed for analyzing their impacts on highway system. However, many of developing countries have not yet been experienced so, they need a macroscopic model for decision in choosing toll collection strategy best for their transportation environment before implementing it. The purpose of this study is to propose macroscopic model to analyze the prospective effects of value pricing strategies, and to compare their results. Three charging methods, ERP, HOT lane, FAIR lane, are simulated by using the proposed model. The results show that there was a sizeable increase in freeway capacity and in average travel speed on the tolled express lanes. It is also found that ERP system is superior in overall revenue from charging toll compared to other methods.

Abstract

River Bridges under Design flood has the possibility of large scale disaster by bridge buoyancy and reversing on increasing of water level when it is raining. Therefore it is need to prepare the measure for prevent damage and to secure safety of client on the expressway. ...Lead moreRiver Bridges under Design flood has the possibility of large scale disaster by bridge buoyancy and reversing on increasing of water level when it is raining. Therefore it is need to prepare the measure for prevent damage and to secure safety of client on the expressway. This technical paper described general course of production, installation and operation on flood warning equipment using the Mobile System for solving this problem. Really we installed this equipment on the River Bridge on yeongchon, Gyeongbuk on 2009. We have the efficacy on the expressway bridge maintenance by the Mobile System which checking the increasing water level of River Bridge anywhere. This technical paper will indicate the more efficient maintenance method by describe oncoming furtural improvement item with this result.

Abstract

During the past decade, the transportation smart card system and its market has been developed and grown. The essential infrastructure for the system has been spread throughout the country. We can see there are several types of terminals or gates in all kinds of public tr...Lead moreDuring the past decade, the transportation smart card system and its market has been developed and grown. The essential infrastructure for the system has been spread throughout the country. We can see there are several types of terminals or gates in all kinds of public transportation. As various types of the terminal, each terminal has their own operable transportation card differently. A key problem is that interoperability is not supported, not only in transportation methods (e.g. bus, train, etc.), but in regional areas. We are required to develop a novel interoperable transportation smart card system, called the OCAP card (One Card All Pass in Korea) system based on the Korea Industry Standard. This paper proposes the purchase terminal, one of the components in the OCAP card system. We design and develop the purchase terminal for the OCAP card system has to be able to recognize the existing regular card and the OCAP card with the standard PSAM inside. Through running a test-bed, we expect our proposed terminal could be used with a reasonable degree of certainty with reliability

Abstract

We propose infra sensor based unmanned vehicle system enabling the vehicle to drive automatically without a human. The system creates vehicle control command with the sensed information collected from road side sensors, and then transmits it. In this paper, we analyze wir...Lead moreWe propose infra sensor based unmanned vehicle system enabling the vehicle to drive automatically without a human. The system creates vehicle control command with the sensed information collected from road side sensors, and then transmits it. In this paper, we analyze wireless communication requirement between the vehicle and the road side server to safely provide the vehicle control command. Further, we have done the outdoor test for the system equipped with IEEE 802.11a wireless communication devices.

Abstract

This paper proposes the control of vehicles’ behaviors regarding platooning such as forming and splitting a platoon, switching lateral control between vehicle-following control and road-following control. The proposed control architecture is composed of two layers. The up...Lead moreThis paper proposes the control of vehicles’ behaviors regarding platooning such as forming and splitting a platoon, switching lateral control between vehicle-following control and road-following control. The proposed control architecture is composed of two layers. The upper layer is state controller which circumstantially switching vehicle’s states such as stand-alone vehicle, platoon leader and platoon follower. The lower layer is feed-back controller for controlling the traction forces, braking forces and steering angle of a vehicle for keeping a velocity, an inter-vehicle distance and tracking a road center or a trajectory of the preceding vehicle. The lower layer has several kinds of feedback control algorithms. The control algorithms working under each vehicle’s state are settled in advance, and automatically switched according to the vehicle’s state. Thus the vehicle’s behavior regarding platooning can be easily controlled by changing vehicle’s states without considering vehicle motion control. The proposed control is validated by experiments using small electric vehicles.

Abstract

This paper proposes a new freeway traffic management scheme, which takes advantage of vehicular sensor network and V2V(Vehicle to Vehicle)/ V2I(Vehicle to Infra) 2-way communication environments of the ubiquitous transportation system. The proposed scheme pursues to maint...Lead moreThis paper proposes a new freeway traffic management scheme, which takes advantage of vehicular sensor network and V2V(Vehicle to Vehicle)/ V2I(Vehicle to Infra) 2-way communication environments of the ubiquitous transportation system. The proposed scheme pursues to maintaining traffic flow stability to prevent from or at least delay the flow breakdown and as a result, to maintaining the productivity. In developing the scheme, there are mainly two technical issues to be addressed: One is how to monitor traffic flow stability. The other is what should be done to maintain the traffic flow stability. Some simulation experiments are performed to address these issues and a new freeway flow management scheme is provided based on the simulation results. The control strategies according to the various control objectives for each traffic flow states are proposed as follows: Advise the drivers to maintain the optimal speed for normal flow state, maintain the traffic flow stability by platoon control for critical state, and surpress the shock wave propagation for congested state.

Abstract

The Roads and Traffic Authority of NSW (RTA) and NICTA are engaged in a successful, ongoing research collaboration. RTA continues to develop the SCATS adaptive traffic control system working with NICTA to implement some of the innovations emerging from the RTA/NICTA Smart...Lead moreThe Roads and Traffic Authority of NSW (RTA) and NICTA are engaged in a successful, ongoing research collaboration. RTA continues to develop the SCATS adaptive traffic control system working with NICTA to implement some of the innovations emerging from the RTA/NICTA Smart Transport and Roads initiative. SCATS is one of the most widely used and successful traffic control systems, with installations in 142 cities across 25 countries. NICTA is the Australian Government’s Centre for Excellence for research into Information and Communications Technology. The collaboration is allowing RTA and NICTA to look at measures for improving traffic control in specific, difficult situations.

Abstract

Seohae Bridge became the one of the busiest gateway of West sea and the connecting way of national industry complex for effective transportation. These systems are deteriorated and the functions of user program are too simple to expand the usage with limited measurement r...Lead moreSeohae Bridge became the one of the busiest gateway of West sea and the connecting way of national industry complex for effective transportation. These systems are deteriorated and the functions of user program are too simple to expand the usage with limited measurement result. So systems were reconstructed focusing on cable stayed bridge’s intensive management. GPS systems and integrated system were built for effective management of traffic, bridge, and information communication facility management.

Abstract

In this paper, we describe our evaluation of the effects of reducing CO2 (carbon dioxide) emissions that can be achieved with a non-stop driving assist service using a high-spatiotemporal resolution traffic simulator. A non-stop driving assist service is a service that af...Lead moreIn this paper, we describe our evaluation of the effects of reducing CO2 (carbon dioxide) emissions that can be achieved with a non-stop driving assist service using a high-spatiotemporal resolution traffic simulator. A non-stop driving assist service is a service that affects instantaneous speed rather than average speed. Therefore, to evaluate this service, we applied a high-spatiotemporal resolution traffic simulator that reproduces instantaneous speed as precisely as a driving simulator and a CO2 emissions model that takes instantaneous speed into account. We investigated how reductions in CO2 emissions are related to traffic volume and adoption rate. As a result, we found that the service was rather effective when the traffic volume was low, and that even if the service’s adoption rate was low, a certain reduction in CO2 emissions could be expected.

Abstract

This study demonstrates the measuring reliability of travel times.This study demonstrates the measuring reliability of travel times.

Abstract

ETC in Taiwan requires a two-piece On Board Unit (OBU) and an IC card with a prepaid deposit. Toll deduction takes place when the vehicle passes through a toll station without stopping. Current BOT contract requires 100% enforcement rate for all failed-deductions. With th...Lead moreETC in Taiwan requires a two-piece On Board Unit (OBU) and an IC card with a prepaid deposit. Toll deduction takes place when the vehicle passes through a toll station without stopping. Current BOT contract requires 100% enforcement rate for all failed-deductions. With the help of the OBU registry information, 65% of the failed-deduction tolls require no further manual intervention. The remaining 35%, similar to video tolls, require manual verification to ensure 100% billing accuracy. With LPR system’s 95% accuracy rate, the fore mentioned operation model consumes significant manpower resources. This study is to improve the manpower efficiency with the adoption of a parallel LPR system. Using 2 different LPR systems and real data as input, an enhanced operating process is proposed to automatically resolve 78.7% of the manual verification cases so that significant operating manpower can be saved.