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Abstract

Unsignalized intersections have posed serious threats to driving safety. Based on advanced wireless technologies, e.g., WAVE/DSRC, this paper introduces an advanced intersection manager acting like a virtual traffic arbitrator to coordinate the right-of-way among vehicles...Lead moreUnsignalized intersections have posed serious threats to driving safety. Based on advanced wireless technologies, e.g., WAVE/DSRC, this paper introduces an advanced intersection manager acting like a virtual traffic arbitrator to coordinate the right-of-way among vehicles approaching an unsignalized intersection, thereby achieving a cost-effective solution to address the issue other than installing traffic signals or improved geometric design.

Abstract

Kashiwa City is located about 30 km north-east of Tokyo in Chiba Prefecture. There is a key junction for traffic where a main road radiating from the center of Tokyo and an orbital main road intersect in the city center, causing chronic traffic congestion. There are many ...Lead moreKashiwa City is located about 30 km north-east of Tokyo in Chiba Prefecture. There is a key junction for traffic where a main road radiating from the center of Tokyo and an orbital main road intersect in the city center, causing chronic traffic congestion. There are many commercial facilities located in the city center area, so on weekends and public holidays traffic congestion is generated by vehicles waiting to enter the car parks of the commercial facilities. This paper introduces initiatives to determine the traffic situation within the city using probe data collected by high speed high volume communication between ITS spots installed on the roads and car navigation systems compatible with ITS spots.

Abstract

Most traffic lights operate according to a fixed setting. However in reality, vehicle flow rates of the two directions are not always equivalent. As a result, the traffic light at the vertical roadway may turn red when no car is driving on the horizontal roadway, or remai...Lead moreMost traffic lights operate according to a fixed setting. However in reality, vehicle flow rates of the two directions are not always equivalent. As a result, the traffic light at the vertical roadway may turn red when no car is driving on the horizontal roadway, or remain in red when all cars on the horizontal roadway have passed the intersection. In this paper, we develop an intelligent traffic light control application to relieve these situations. Besides, at cooperative vehicular safety environment of WAVE/DSRC, each vehicle periodically broadcasts its current moving status. In addition, our proposed mechanism will collect and analyze the information broadcasted by all OBUs. Hence, the traffic lights are able to dynamic operate according the current vehicle flow rates of two directions and further reduce the street intersection waiting time and increase the traffic throughput at the street intersection.

Abstract

We have examined the effects of fragrance presentation technique, which do not provoke interference with driving actions as one of the approaches to restore drowsy drivers to a normal alert state. The result that continuing effect is about 10 minutes have obtained. The ef...Lead moreWe have examined the effects of fragrance presentation technique, which do not provoke interference with driving actions as one of the approaches to restore drowsy drivers to a normal alert state. The result that continuing effect is about 10 minutes have obtained. The effect of fragrance has been used for relaxation in the field of aromatherapy, and the effect in relieving fatigue can be also expected. Generally, feeling stress cause to decrease neurotransmitter serotonin that helps to restore a mental balance. This result leads to the strain and loss of concentration. We report on the verification on the effect in relieving fatigue of the driver by fragrance that stimulates the serotonin secretion.

Abstract

Recently, along with the rapid popularization of smart phone, operation of the smartphone while driving, bicycling or walking has been increased rapidly.The gaze of the screen with the operation of the smart phone remarkably is made to lower recognition and attention to t...Lead moreRecently, along with the rapid popularization of smart phone, operation of the smartphone while driving, bicycling or walking has been increased rapidly.The gaze of the screen with the operation of the smart phone remarkably is made to lower recognition and attention to the circumferences. This condition becomes a social problem in order to cause important accidents such as fall accidents at train stations, count crashes between pedestrians and bicycles and so on. In this paper, the detection technique of the condition that the smartphone is manipulated with the walking by analysis of the image captured by the camera mounted in the smartphone and real-time detection of the operation condition by multiple sensors is proposed

Abstract

This paper addresses the vehicle routing problem (VRP) in stochastic and time-dependent (STD) networks
with hard time window constraint. As the sub-problem of STDVRP, the STD optimal path between two customer
nodes is obtained through robust approach, which minimize...Lead moreThis paper addresses the vehicle routing problem (VRP) in stochastic and time-dependent (STD) networks
with hard time window constraint. As the sub-problem of STDVRP, the STD optimal path between two customer
nodes is obtained through robust approach, which minimizes the worst-case travel time over all the candidate paths
without requiring the probability distributions of link travel times. With the sub-problem solved, the proposed
STDVRP model can be converted into a normal time-dependent (TD) vehicle routing problem and a route
construction algorithm is applied to solving the simplified problem in the extended Solomon instances as
efficiently as TDVRP. The computational results show that the proposed STDVRPTW model can improve the
level of customers' service by guarantee the time-window constraint satisfied and only lead to a little increase in
cost, which is especially apparent in the problems where the customers' time windows are narrow.

Abstract

This paper devotes to design and integrate a hybrid and innovative LDWs scheme to increase its availability. The scheme presents a solution of discontinuous lane marking for detection using camera and sensor fusion, including image processing, dead-reckoning and vehicular...Lead moreThis paper devotes to design and integrate a hybrid and innovative LDWs scheme to increase its availability. The scheme presents a solution of discontinuous lane marking for detection using camera and sensor fusion, including image processing, dead-reckoning and vehicular signals. To extract lane markings from image catching, DSP perform the task after image calibration and coordinate transform. The vision is applied by a camera which plays the role of displaying preceding image and warning information with buzzer. When operating at failure mode, inertial signals apply and provide available position. In dead reckoning technology, hybrid sensors address a global and all weather assistant design based on odometry and inertial sensor. From inertial data and vehicular information, this paper provides an extended solution with learning parameters to do remote warning. The proposed system is carried out with theoretical application and hardware integration, and furthermore the result shows extended LDWs approach applicability.

Abstract

As the advancement of Intelligent Transportation Systems (ITS), real-time information has been proved to be a vital solution to relieve traffic congestion. However, most of the studies focus on normal traffic environment without considering possible failure due to climat...Lead moreAs the advancement of Intelligent Transportation Systems (ITS), real-time information has been proved to be a vital solution to relieve traffic congestion. However, most of the studies focus on normal traffic environment without considering possible failure due to climate change. Climate change and associated impacts on transportation and infrastructure have become an important issue around the world in recent years. This research aims at assessing possible impacts of heavy precipitation on network reliability under real-time information. Two reliability indexes, including connectivity and travel time, are used to examine network reliability under heavy precipitation. Numerical experiments are conducted to illustrate the impact of heavy precipitation on network reliability. A real city network, the Jiaxian network, which is heavily affected by Typhoon Morakot in Taiwan, is coded.

Abstract

This paper proposes a traffic signal control optimization using not only Multi-Element Genetics Algorithms (ME-GA) but also modification of signaling model. The aim of this method is to find out the best signaling model for considered network with the ME-GA for defining t...Lead moreThis paper proposes a traffic signal control optimization using not only Multi-Element Genetics Algorithms (ME-GA) but also modification of signaling model. The aim of this method is to find out the best signaling model for considered network with the ME-GA for defining the optimum signal parameter. In this case, three signaling models (named as model 1, 2, and 3) are proposed for the considered road network. Several experiments were carried out using simple network model and real network model (Ooe-Toroku Kumamoto City Road Network Model) for evaluating the proposed methods. The experimental results show that the signaling model 1 with ME-GA provides the best performance which is shown by higher percentage of vehicle flow and less vehicle delay time than others signaling models for considered network.

Abstract

In Japan ITS Spots were deployed approximately 1,600 locations mainly on expressways and ITS Spot service has started. ITS Spot system has the function of two-way I2V communication. MLIT has developed a probe system for collecting probe data from an ITS spot-compatible ca...Lead moreIn Japan ITS Spots were deployed approximately 1,600 locations mainly on expressways and ITS Spot service has started. ITS Spot system has the function of two-way I2V communication. MLIT has developed a probe system for collecting probe data from an ITS spot-compatible car navigation system through ITS spots. Specific sections of travel time and travel speed are calculated at the server computers. In this research the coverage region of probe data through ITS Spots on expressways is calculated and evaluated by index of cover rate. It is necessary to deploy additional ITS Spots on ordinary roads to collect probe data on main roads nationwide outside this coverage region. Coverage region of ITS Spots on ordinary roads is calculated and additional location of ITS Spots is suggested.

Abstract

A systematic calibration procedure based on orthogonal experiment is proposed. Six driving behavior parameters critical to the model accuracy are calibrated in the proposed procedure. Then, an example of the procedure application on a complex signalized intersection in B...Lead more A systematic calibration procedure based on orthogonal experiment is proposed. Six driving behavior parameters critical to the model accuracy are calibrated in the proposed procedure. Then, an example of the procedure application on a complex signalized intersection in Beijing is given. The average errors of queue length and traffic flow volume are used as the performance indexes in the example. Each scenario from the experimental design is run 10 times and the simulation result is recorded for each of the runs. The performance indexes based on simulation data are calculated to compare survey data. The results show the applicability and effectiveness of using the proposed procedure based on orthogonal experiment to calibrate the parameters in VISSIM.

Abstract

Traffic is an important indicator of a city's health. Presence of traffic indicates movement of people and goods, and thus economic vitality. However, if left unchecked, excess traffic leads to congestion that results in wasted time and fuel, impacts the environment throu...Lead moreTraffic is an important indicator of a city's health. Presence of traffic indicates movement of people and goods, and thus economic vitality. However, if left unchecked, excess traffic leads to congestion that results in wasted time and fuel, impacts the environment through increased emissions and negatively affects the qualify of life for citizens. To manage a city's transportation and environmental goals effectively, accurate data is required – beginning with basic information such as counting traffic passing on a street. In this article, we present a general approach for collecting traffic data from a multitude of sources, organizing that data for consumption by multiple parties and exploiting the data productively by many diverse
users. We illustrate this approach with a case study in Boston, Massachusetts, USA.

Abstract

This paper used the cell transmission model to determine ramp metering rate and maintain a certain level of service for freeway mainlines. This control can increase the number of permitted vehicles entering a freeway as much as possible without increasing delay but slight...Lead moreThis paper used the cell transmission model to determine ramp metering rate and maintain a certain level of service for freeway mainlines. This control can increase the number of permitted vehicles entering a freeway as much as possible without increasing delay but slightly decreasing speed. The permission involves a range in a certain level of service. Therefore, the proposed method could be more practical and flexible for the execution of fluent freeway traffic.

Abstract

As vehicle systems become more complicated, it takes longer to analyze the troubles. By collecting the useful data can shorten the time to analyze such troubles in vehicle systems which consist of many sub-systems. The conventional remote data acquisition systems can only...Lead moreAs vehicle systems become more complicated, it takes longer to analyze the troubles. By collecting the useful data can shorten the time to analyze such troubles in vehicle systems which consist of many sub-systems. The conventional remote data acquisition systems can only collect the fixed set of data, and the dedicated measurement instruments are required to collect the data under various conditions. We proposed a new system which can collect data under variable conditions by effectively utilizing the existing resource of the car navigation head unit. We conducted an actual vehicle experiment to verify the basic performance of the system.

Abstract

In the paper, the ramp metering methodology based on the individual vehicle data is proposed and evaluated with the microscopic simulation model. Individual vehicle data including vehicle speed were tested and the new ramp metering methodology was proposed. The simulation...Lead moreIn the paper, the ramp metering methodology based on the individual vehicle data is proposed and evaluated with the microscopic simulation model. Individual vehicle data including vehicle speed were tested and the new ramp metering methodology was proposed. The simulation test bed was installed and the performance of the proposed methodology was compared with the existing ramp metering methodology. It was found that the ramp metering methodology with individual vehicle data successfully worked for improving freeway operation and gave better results on reducing speed variations and increasing average speed in freeway.

Abstract

At the 26th of April, the Honda system had been put by its press-release, in respect of detecting traffic congestion. In principle, the detection technology is originated from 1/f fluctuations (spectra) over driver acceleration and deceleration behavior. For example, the ...Lead moreAt the 26th of April, the Honda system had been put by its press-release, in respect of detecting traffic congestion. In principle, the detection technology is originated from 1/f fluctuations (spectra) over driver acceleration and deceleration behavior. For example, the probability of traffic congestion is increased, when 1/f fluctuations is large. This paper describes on fuel economy due to the smartphone based detection detector, in terms of minimizing traffic congestion.

Abstract

The railway is called energy saving among transportation systems. In order to maintain global environment, to contribute to the stable supply of electric power and to prepare for a power-rates jump, the further reduction of energy consumed and peak cuts are needed. Grasp ...Lead moreThe railway is called energy saving among transportation systems. In order to maintain global environment, to contribute to the stable supply of electric power and to prepare for a power-rates jump, the further reduction of energy consumed and peak cuts are needed. Grasp of actual conditions, and supervision and control of energy consumption are important. In this paper, the concept of the Railway Energy Management System (Railway EMS) is introduced. For electric railways, the energy used by a railway system is circulated using regenerative inverter equipment and storage batteries. The railway EMS aims at the optimal operation of energy by harmonizing with transportation and energy required for transportation, in the range of maintaining the service level of the railway.

Abstract

We propose the traffic counting system using electronically scanning millimeter-wave radar (ES-MWR) for infrastructural systems. For this purpose, we installed the ES-MWR of near-field-limited setting and evaluated its traffic counting performances in a dense traffic occa...Lead moreWe propose the traffic counting system using electronically scanning millimeter-wave radar (ES-MWR) for infrastructural systems. For this purpose, we installed the ES-MWR of near-field-limited setting and evaluated its traffic counting performances in a dense traffic occasion. As the result, we obtained the vehicle detection rate of 93.7 % in this study.

Abstract

Recently, Electric Vehicle (EV) is considered as an important technology; however, there are some problems for spreading EVs. One of these problems is that charging the battery of an EV needs a longer time than refueling of gasoline vehicles. To overcome these problems, f...Lead moreRecently, Electric Vehicle (EV) is considered as an important technology; however, there are some problems for spreading EVs. One of these problems is that charging the battery of an EV needs a longer time than refueling of gasoline vehicles. To overcome these problems, for example, some local governments in Japan started projects in which restaurants and shops rent outlets for charging EV of their customers during eating or shopping. On the other hand, other local government in Japan has developed a system to reserve chargers by sharing information on usage of chargers. In this paper, we consider the above service to rent outlets during eating or shopping, and discuss how methods to reserve chargers affect the waiting time for charging EVs.

Abstract

This paper addresses our approach and concept to enhance the quality of mobility(QoM). By defining how mobility should be in terms of people and goods, five viewpoints: Traffic flow, Mobility modality, Environment, Energy, and Medical & health care, which need to compile...Lead moreThis paper addresses our approach and concept to enhance the quality of mobility(QoM). By defining how mobility should be in terms of people and goods, five viewpoints: Traffic flow, Mobility modality, Environment, Energy, and Medical & health care, which need to compile as solution and service are explained. These viewpoints benefit from the advanced ICT, sensing and device technology. With these viewpoints, the approach to solve the fundamental desire differs according to the characteristics of city and consequently solution and service to provide with these five might change due to which transport mode: private or public, should weight. As for the conclusion, our key systems to form our concept, Integrated Transport Solution, is explained categorizing by inter-city and inner-city transport. Especially for the inner-city transport, energy management for various transport modes such as LRT and electric bus becomes the key to realize environment friendly urban transport system.

Abstract

The objective of this study is to determine priorities of ATMS policy measures using the Analytic Hierarchy Process. AHP model composes five major attributes (Level 1) and 10 sub-elements (Level 2). The result of this model shows that experts put a higher importance on Fu...Lead moreThe objective of this study is to determine priorities of ATMS policy measures using the Analytic Hierarchy Process. AHP model composes five major attributes (Level 1) and 10 sub-elements (Level 2). The result of this model shows that experts put a higher importance on Functionality and Efficiency, out of the 5 high rank items in Level 1, and . In the comparison of Level 2, Function of Alternative/Detour in Functionality, Connection to Existing ITS Project in Connectivity, Local Governments Currently under ATMS Promotion in Expandability, Small and medium-sized cities in Equity received high importance.

Abstract

While railway systems are already energy efficient transportation system, they require further energy efficiencies and renewable energies. We are striving to develop the railway energy management system (Railway EMS), which encompasses the better use of regenerative energ...Lead moreWhile railway systems are already energy efficient transportation system, they require further energy efficiencies and renewable energies. We are striving to develop the railway energy management system (Railway EMS), which encompasses the better use of regenerative energy with energy storages and regenerative inverters under same level of operation quality and management of energy consumption of the whole railway system. This reports focus on the station where regenerative energy from trains are available, and introduce the station energy management system (Station EMS) which manage station energy storage for regenerative energies and renewable energies, and the same manages effective supply of those energies to train system, station equipment and electric buses. Also this report assesses features of different potential system configuration for different application conditions.

Abstract

SimMoblity is a new simulation platform, developed at the Singapore-MIT Alliance for Research and Technology (SMART), that integrates various mobility-sensitive behavioural models within a multi-scale simulation platform that considers land-use, transportation and communi...Lead moreSimMoblity is a new simulation platform, developed at the Singapore-MIT Alliance for Research and Technology (SMART), that integrates various mobility-sensitive behavioural models within a multi-scale simulation platform that considers land-use, transportation and communication interactions. It particularly focuses on impacts on transportation networks, intelligent transportation services and vehicular emissions, thereby enabling the simulation of a portfolio of technology, policy and investment options under alternative future scenarios. In short, SimMobility encompasses the modeling of millions of agents, from pedestrians to drivers, from phones, traffic lights to GPS, from cars to buses and trains, from second-by-second to year-by-year simulations, across entire countries.

Abstract

This paper proposes the next generation’s Car to X (C2X) Communication unit. First, we introduce our communication unit LinkBird-MX and software C2X-SDK. Second, we also introduce their records of use on some projects. Third, we consider our subjects suffering through the...Lead moreThis paper proposes the next generation’s Car to X (C2X) Communication unit. First, we introduce our communication unit LinkBird-MX and software C2X-SDK. Second, we also introduce their records of use on some projects. Third, we consider our subjects suffering through the participation in these projects. Finally, considering the above, we proposed the next generation’s C2X Communication unit.

Abstract

The advent of new technology at a very affordable price has provided opportunity to track movement of vehicles in masses and in real time. This has enabled Land Public Transport Commission’s mission to monitor all bus movements in the country, numbering 10,000+. The monit...Lead moreThe advent of new technology at a very affordable price has provided opportunity to track movement of vehicles in masses and in real time. This has enabled Land Public Transport Commission’s mission to monitor all bus movements in the country, numbering 10,000+. The monitoring is critical to measure performance, ensure service quality and plan capacity supply.

Abstract

We propose the method for optimizing train running profile on the basis of pruning algorithm. Optimizing train running profile which minimizes total energy consumption provides the fundamentals for practical operation of train control. To obtain optimal train running prof...Lead moreWe propose the method for optimizing train running profile on the basis of pruning algorithm. Optimizing train running profile which minimizes total energy consumption provides the fundamentals for practical operation of train control. To obtain optimal train running profile in many previous works, this problem is formulated as optimal control problem with many conditions (fixed origin and destination, stipulated running time, limited electric power, limited velocity and so on) and is adopted the numerical methods for calculus of variations, Pontryagin's maximum principle, incremental method, dynamic programming, Markov decision process and so on. Especially, previous work utilizing dynamic programming is useful for optimizing train running profile under the complicated conditions. However, this algorithm requires much time to be used in practical situation. Therefore, we developed the algorithm for optimizing train running profile under the same complicated condition within a little time scale.

Abstract

To use electric vehicles (EVs) efficiently in transportation systems, it is necessary to estimate electric energy consumption accurately when place of departure and destination are given. Energy consumption varies according to slope or surface condition of roads. Therefor...Lead moreTo use electric vehicles (EVs) efficiently in transportation systems, it is necessary to estimate electric energy consumption accurately when place of departure and destination are given. Energy consumption varies according to slope or surface condition of roads. Therefore, energy consumption differs depending on the place even if a vehicle runs at the same velocity, making it difficult to estimate the consumption accurately. In this paper, an EV simulator that calculates electric energy consumption and a method to obtain parameters that vary according to place by running on actual road are introduced. Slope angle and rolling resistance coefficient (RRC) are estimated by subtracting energy loss by other running resistance from drive motor output power when the vehicle runs on actual road. It is shown by experiment that accuracy of simulated energy consumption is improved by using parameters estimated by running on actual road.

Abstract

DynaMIT (Dynamic Network Assignment for the Management of Information to Travelers) is a simulation-based Dynamic Traffic Assignment (DTA) model system that estimates and predicts traffic conditions in real time. At every interval that new real world observations of the n...Lead moreDynaMIT (Dynamic Network Assignment for the Management of Information to Travelers) is a simulation-based Dynamic Traffic Assignment (DTA) model system that estimates and predicts traffic conditions in real time. At every interval that new real world observations of the network are received, DynaMIT firstly estimates the current state of the network. It then predicts the state of the network in the short term future - typically for each 5 minute period in the next 30 minutes.

Abstract

For adequate traffic flow control, vehicle detectors based on sensor technology plays very important role. Especially, license plate recognition (LPR) with image sensors is virtually the only technology that can identify each car in traffic flow at present. Automobiles wi...Lead moreFor adequate traffic flow control, vehicle detectors based on sensor technology plays very important role. Especially, license plate recognition (LPR) with image sensors is virtually the only technology that can identify each car in traffic flow at present. Automobiles with license plates of various formats travel across national boundaries as a result of liberalization of international traffic. In Southeast Asia, where non-Latin characters are used on license plates in some countries, liberalization is planned in 2015. We have developed a novel method for LPR. Our method does not assume a specific format nor a specific character system. In the experiment with Thai license plates, plate detection rate was 97.9%, and character recognition rate was 88.0%. The results show that our methods of license plate detection and character recognition were valid for Thai license plates.

Abstract

The Future Mobility Survey (FMS) is a smartphone based, prompted-recall, technology developed by MIT, Singapore-MIT Alliance for Research and Technology (SMART), the University of Coimbra, Portugal and Intellysis, NTU that enables large scale high spatial and temporal res...Lead moreThe Future Mobility Survey (FMS) is a smartphone based, prompted-recall, technology developed by MIT, Singapore-MIT Alliance for Research and Technology (SMART), the University of Coimbra, Portugal and Intellysis, NTU that enables large scale high spatial and temporal resolution data collection for individual travel data collection. This paper gives an overview of this technology and provides a summary of preliminary results of our current field test, Future Mobility Survey 2013.The Future Mobility Survey 2013 is a collaborative project between the Singapore-MIT Alliance for Research and Technology (SMART) and the Land Transport Authority of Singapore (LTA). In this survey, we apply our recent technology (FMS) to collect activity and travel behavior information from a recruited sample of 1000 respondents from Singapore.

Abstract

In the near future, if many electric vehicles (EVs) run on highways, a highway energy management system (highway EMS) that controls supply and demand of EV charging will be required. In order to conduct research on future highway EMSs, a simulator is needed for evaluating...Lead moreIn the near future, if many electric vehicles (EVs) run on highways, a highway energy management system (highway EMS) that controls supply and demand of EV charging will be required. In order to conduct research on future highway EMSs, a simulator is needed for evaluating EV charging strategies. For this purpose, it is necessary to model how EV charging strategies affect EV drivers' decision-making. Multi-agent simulators (MASs) are often used for predicting the total effect on individuals' decision-making and activities. This paper presents a new general-purpose meta-level multi-agent simulator, MetaMAS, which simulates the total effect of individual agents' activities using domain-specific simulators. Using MetaMAS agents, we model the key players of the highway EMS and integrate traffic and power simulators. We show how MetaMAS agents communicate with one another and interact with traffic and power simulators. We also show how to evaluate some charging strategies of the highway EMS.

Abstract

This paper explains: (1) how ISA has been discussed and how the environment of ISA has changed in last decade in Japan; (2) how Soft Car project, a Japanese ISA project directed by the author, has been carried; and (3) what should be done for the deployment of ISA in Jap...Lead moreThis paper explains: (1) how ISA has been discussed and how the environment of ISA has changed in last decade in Japan; (2) how Soft Car project, a Japanese ISA project directed by the author, has been carried; and (3) what should be done for the deployment of ISA in Japan and world-wide at large. The author advises to undertake small scale speed limit experiments in neighborhood communities with national transportation policies, change of legal framework, business oriented ITS technologies, and international harmonization in view.

Abstract

This paper attempts to propose an approach for optimizing the object searching on the maps.
The current object searching process has been developed but it takes an excessive amount of time (about 2 seconds) (a number of data to process is effect in having taking a lo...Lead moreThis paper attempts to propose an approach for optimizing the object searching on the maps.
The current object searching process has been developed but it takes an excessive amount of time (about 2 seconds) (a number of data to process is effect in having taking a long time) this paper proposes an approach in solving the problem by using spatial search model. Based on the experimental results, it is found that the proposed approach has processing time about 0.75 millisecond. This result in improvement about 4,000 times. The proposed approach can be applied in solving other geometry data problems such as routing system, and map matching system.

Abstract

The section of Yokohama-Machida and Atsugi the Tomei Expressway causes frequent heavy traffic jams due to the heavy traffic amounts entering Tokyo metropolis. Because the bottleneck is located around the Yamato Tunnel, it has been difficult to care for the bottleneck. Thu...Lead moreThe section of Yokohama-Machida and Atsugi the Tomei Expressway causes frequent heavy traffic jams due to the heavy traffic amounts entering Tokyo metropolis. Because the bottleneck is located around the Yamato Tunnel, it has been difficult to care for the bottleneck. Thus, the dynamic information provision regarding the speed recovery and lane utilization was planned. The information is provided on VMS displays in the condition just before a traffic jam occurs, and the condition is automatically analyzed by the data collected by traffic counters. This research focuses on the effectiveness of the information to alleviate heavy traffic jams and enhance traffic condition of the section. The result was the information affects drivers on changing from the densest lane to the sparse lanes.

Abstract

With increasing number of vehicles and need to expanding transportation systems, urban streets are more seriously dealt with the congestion. Since traffic control lights are the main tools to set and optimize flow in urban networks, precise planning for such lights is of ...Lead moreWith increasing number of vehicles and need to expanding transportation systems, urban streets are more seriously dealt with the congestion. Since traffic control lights are the main tools to set and optimize flow in urban networks, precise planning for such lights is of high importance to increase network efficiency and improve the performance in oversaturation conditions. Sydney Coordinated Adaptive Traffic System (SCATS) is used to optimally control traffic lights in urban networks. Not considering the long queues and spillback conditions of traffic flow is of the restrictions of such a system. This paper tries to present a method to improve performance of SCATS by considering long queues and spillback conditions in congested arterials. The presented method was tested in a sample arterial of Tehran, Iran. The results indicate lights performance improvement in conditions with using queue detector and preventing queue spillback to upstream intersection.

Abstract

Mountainous rural road has no lighting facilities unlike urban areas, it is difficult to get a nighttime visibility. To solve this problem, ITS center introduced the Infrared floodlights. However, it didn't get the desired video quality, so that the camera lens is not com...Lead moreMountainous rural road has no lighting facilities unlike urban areas, it is difficult to get a nighttime visibility. To solve this problem, ITS center introduced the Infrared floodlights. However, it didn't get the desired video quality, so that the camera lens is not compatible with floodlights. Therefore, installation of streetlights around CCTV became necessary. The results obtained through this study are as follows. First, install street lights proper interval of 50m within a reasonable when considering the street lights using time-lapse due to illumination degradation. Second, considering the uniformity ratio of illumination, the street lights installed by equal spacing. Third, select lamp luminaries with good-color rendering.

Abstract

In recent years, .Full-speed Range Adaptive Cruise Control (FSR-ACC) are equipped on many mass-production cars. When the car pulls up at a stoplight during FSR-ACC is working, the driver may feel bad if the car rocks to a stop. We developed smooth stop brake control using...Lead moreIn recent years, .Full-speed Range Adaptive Cruise Control (FSR-ACC) are equipped on many mass-production cars. When the car pulls up at a stoplight during FSR-ACC is working, the driver may feel bad if the car rocks to a stop. We developed smooth stop brake control using ESC(Electric Stability Control) unit to stop the car smoothly for passenger car.

Abstract

This paper introduces the concept of field operation tests of an innovative advanced safety vehicle services scheduled to be demonstrated in Hiroshima. The proposing services are realized by of vehicle-to-vehicle communications between private cars and public transport ve...Lead moreThis paper introduces the concept of field operation tests of an innovative advanced safety vehicle services scheduled to be demonstrated in Hiroshima. The proposing services are realized by of vehicle-to-vehicle communications between private cars and public transport vehicles, using dedicated on-board units on both vehicles and premise the usage of ITS-dedicated radio frequency band. The images of developing services for the ITSWC2013 technical showcase between a tramcar and a private car have been described.

Abstract

The Chinese highway traffic dedicated broadcast which is not a traditional broadcast is an innovative application of ordinary FM radio synchronous broadcasting system. Among the transportation and radio and television industry, it is utilizing multiple sections, different...Lead moreThe Chinese highway traffic dedicated broadcast which is not a traditional broadcast is an innovative application of ordinary FM radio synchronous broadcasting system. Among the transportation and radio and television industry, it is utilizing multiple sections, differentiations, and customized inter-cut technologies, and realizing information service with intelligent position information differentiation. This paper studies the differences between the highway traffic dedicated broadcast and traditional broadcast, and analyses the advantages and disadvantages compared with other traffic information services. The key technology of highway traffic dedicated broadcast is proposed, and the application status is introduced in jingjintang expressway. This technology plays an important part to improve highway traffic information service level, and will spread in the whole country.

Abstract

Cooperation between vehicles and infrastructures/other vehicles are increasing recently. In this paper, the concept of the Authority Map is defined, the needs for the Authority Map for ITS services are discussed, the status of digital maps available in Japan is reviewed a...Lead moreCooperation between vehicles and infrastructures/other vehicles are increasing recently. In this paper, the concept of the Authority Map is defined, the needs for the Authority Map for ITS services are discussed, the status of digital maps available in Japan is reviewed and the possibility for the application of the Authority Map in Japan is studied. Candidate ITS services are defined and the benefits, the system components, examples of the sequence and the rested challenges for the service candidates are studied. As a conclusion, the possibility for the application of the Authority Map in Japan is verified.