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Abstract

High-quality, detailed vehicle trajectory data contain valuable traffic information, but the complexity of traffic evolutions hidden in such data makes it difficult to understand in its raw format. While statistical methods are useful for extracting information, it does n...Lead moreHigh-quality, detailed vehicle trajectory data contain valuable traffic information, but the complexity of traffic evolutions hidden in such data makes it difficult to understand in its raw format. While statistical methods are useful for extracting information, it does not entirely leverage the intuition human has for visually inspecting patterns. This paper proposes a visualization to aid the understanding of traffic patterns in vehicle trajectory data. The proposed 4D visualization draws a colored line for each vehicle's trajectory in a three dimensional graph. The four dimensions of data are time (x-axis), distance travelled along the road (y-axis), lane identification (z-axis) and vehicle's speed (color of the line). With this visualization, human can inspect patterns, such as speed oscillations, traffic transitions and the speed patterns in different lanes. The benefits of this approach is that both experts and novices can apply their ability to visually recognize patterns in understanding traffic data.

Abstract

In this study, we proposed the passage safety systems equipped with the cutting-edge IT devices and ITS echnology, based on context awareness in the school zones. These systems were more advanced than the existing traffic safety systems that have shown limited features;Sp...Lead moreIn this study, we proposed the passage safety systems equipped with the cutting-edge IT devices and ITS echnology, based on context awareness in the school zones. These systems were more advanced than the existing traffic safety systems that have shown limited features;Speed cameras and DFS(Driver Feedback System), etc. We also analyzed the passage behaviors of children on crosswalks based on actual data and tried to reflect our analysis results to the passage safety systems that we proposed to be developed.

Abstract

This research considers measures to control excessive speed or lowering of speed of vehicles in 2011, we controlled the driver's sense of speed and other conditions by installing light-emitting devices along the shoulder of an expressway at a certain interval and controll...Lead moreThis research considers measures to control excessive speed or lowering of speed of vehicles in 2011, we controlled the driver's sense of speed and other conditions by installing light-emitting devices along the shoulder of an expressway at a certain interval and controlling the patterns of light emitted. However, evaluations about the attribute of the driver (differ according to gender, age, driving frequency) were not enough. In this research, we have carried out to confirm the effect of the classification of gender, age, the driving frequency and the driving characteristics of subjects. We were able to confirm the thing that is different in an effect stimulation of light by not only different gender, age and the driving frequency but also the driving characteristics.

Abstract

To utilize floating car data (FCD) collected from commercial vehicles on a day-to-day basis, we selected FCD items and developed a technique to generate value-added information by taking advantage of the features of FCD.To utilize floating car data (FCD) collected from commercial vehicles on a day-to-day basis, we selected FCD items and developed a technique to generate value-added information by taking advantage of the features of FCD.

Abstract

3D laser radar is a high-speed figure recognition system that measures the position and speed of objects in real time. It can function despite poor weather conditions as it works by measuring the distance to an object with a laser pulse. By applying 3D laser radar for use...Lead more3D laser radar is a high-speed figure recognition system that measures the position and speed of objects in real time. It can function despite poor weather conditions as it works by measuring the distance to an object with a laser pulse. By applying 3D laser radar for use in road and rail traffic safety, IHI has realized a system that can measure the position and speeds of vehicles and pedestrians.

Abstract

We proposed the path planning algorithm based on Support Vector Machine (SVM) for autonomous vehicles. Our algorithm is able to plan the smooth path for lane centering control without obstacles. This paper describes the improved algorithm for collision avoidance and lane ...Lead moreWe proposed the path planning algorithm based on Support Vector Machine (SVM) for autonomous vehicles. Our algorithm is able to plan the smooth path for lane centering control without obstacles. This paper describes the improved algorithm for collision avoidance and lane changing. Our algorithm sets several virtual obstacles, SVM can determine the safe and smooth path. As a result of the simulation, the vehicle could change lanes in the accuracy of 0.5 [m] along the target path and avoid the obstacles safely and smoothly.

Abstract

In order to reduce CO2 emissions from traffic, until now we have been investigating a Green Wave Advisory System (hereafter GWA) that provides advisory for a single intersection only.1 However, as distances between intersections are relatively short in Japan, the maximum ...Lead moreIn order to reduce CO2 emissions from traffic, until now we have been investigating a Green Wave Advisory System (hereafter GWA) that provides advisory for a single intersection only.1 However, as distances between intersections are relatively short in Japan, the maximum possible CO2 reduction could not be realized. To eliminate this deficiency we have expanded the reach of the service from one intersection to multiple intersections and thereby improved the timing of advice provision. Further, we examined the driver's acceptance of the service based on the simulation results and conducted field studies. Resulting from the simulation analysis and the subsequent system improvement we have been able to improve the CO2 emission reduction by the GWA. Nevertheless, the acceptance evaluation showed that it is not enough to develop the system, but that it is also necessary to think about how to best communicate the information to the driver.

Abstract

Recently communicating and position technology have actively developed for providing infrastructure on the road, safe driving and convenience. Also, the effort to reduce a factor of traffic congestion by providing information for smooth inducement of traffic is progressin...Lead moreRecently communicating and position technology have actively developed for providing infrastructure on the road, safe driving and convenience. Also, the effort to reduce a factor of traffic congestion by providing information for smooth inducement of traffic is progressing. For smooth flow of traffic, it has to be possible not to subjective viewpoint of vehicles, but objective location, velocity and division of a carriageway. Positioning technology is solving by GPS and DGPS but shady and local multipath place needs short-range positioning. In this paper, we confirmed state-specific flexibility of positioning data by blending the positioning algorithm of DGPS sensor in open field and the algorithm of beacon system in shady place. We can determine the carriageway width considering lane and vehicle width by blending algorithm as the average error is 25cm in DGPS and 80cm in RF-beacon. We proved the verification and effectiveness by dynamic simulation and real motorway driving data.

Abstract

The more advanced incident detection and tracking device, that can be used to monitor about 1km length wider area, and severe weather environments, is being developed at SMART Highway project in South Korea, which is named SITMS Multi-Device automatic incident detection...Lead moreThe more advanced incident detection and tracking device, that can be used to monitor about 1km length wider area, and severe weather environments, is being developed at SMART Highway project in South Korea, which is named SITMS Multi-Device automatic incident detection system. The system consists of three elements, which are an array camera, an auto-tracking camera and a radar detector, and can detect incidents, such as a broken vehicle, a traffic accident, an obstacle, parking and stop vehicle on the shoulder lane and non-recurring congestion, in real time. And SITMS Multi-Device automatic incident detection system was installed, demonstrated and evaluated at the test highway, which is located in a Korean expressway, in 2012. In this paper, reasonable methods of the evaluation of newly developed incident detection device are described and its evaluation results are presented.

Abstract

For such high-accuracy applications, DGPS can be employed successfully. DGPS improves the accuracy of position, velocity by providing measurements or correction data from one reference stations using Networked Transport. By DGPS performance, typically an experience positi...Lead moreFor such high-accuracy applications, DGPS can be employed successfully. DGPS improves the accuracy of position, velocity by providing measurements or correction data from one reference stations using Networked Transport. By DGPS performance, typically an experience position error of GPS is reduced from 2m to 0.5m. The proposed system was configured as a server, GPS and Embedded PC for monitoring supported Network. These system applied WAVE communication enables to use Ntrip Protocol that is streaming by TCP/IP protocol stack. Furthermore, WAVE communication express broad communication radius and attract its performance transfer rate and latency in spite of the high speed. Intelligent vehicle need stable communication with much information on the highway for high quality control and positioning service to drivers. Due to this advantage having low-latency, WAVE is suitable for the DGPS communication method. For accuracy localization by WAVE communication, the system was configured Embedded PC based on WAVE OBU

Abstract

The analyses of route choice behavior based on revealed preference (RP) data are rare because of the difficulty of observing route choice decisions in practice. On Tokyo metropolitan expressway, traffic surveillance and electronic toll collection (ETC) systems provide ric...Lead moreThe analyses of route choice behavior based on revealed preference (RP) data are rare because of the difficulty of observing route choice decisions in practice. On Tokyo metropolitan expressway, traffic surveillance and electronic toll collection (ETC) systems provide rich sources of traffic condition and behavior data. This paper analyzes route choice and route switching behavior using the observed route choice decisions collected from ETC data in the selected study area. Moreover, the paper identifies and evaluates the importance of attributes relating to traffic condition information and drivers' traveling characteristics derived from both ETC and detector data.

Abstract

Traffic incident information is very helpful to plan the trip or make a decision to avoid any road situation like traffic jam. Traffic incident information that can help road user is text information like tweet from Twitter, one of the major sources, and the research data...Lead moreTraffic incident information is very helpful to plan the trip or make a decision to avoid any road situation like traffic jam. Traffic incident information that can help road user is text information like tweet from Twitter, one of the major sources, and the research data such as GPS data, flow rate and congestion density level. Therefore, we decided to create the Traffic Incident Q&A System. This system collects tweets from Twitter, extracts and classifies tweets and research data into incident knowledgebase. Then, the system provides useful traffic information that road users can query to get what they need to know. So, we present an ontology design for this Traffic Incident Q&A System that using class relationship to avoid spatial search cost. This system can infer some information from knowledgebase and answer some of the frequently asked question.

Abstract

We’ve been conducting researches and developments of pre-crash motorcycle safety systems employing vehicle-to-vehicle communication systems (V2V CSs), through the participations in ITS projects in Japan and in Europe. Pre-crash safety measures are extremely important to a...Lead moreWe’ve been conducting researches and developments of pre-crash motorcycle safety systems employing vehicle-to-vehicle communication systems (V2V CSs), through the participations in ITS projects in Japan and in Europe. Pre-crash safety measures are extremely important to avoid accidents especially for motorcycles. As for the pre-crash safety measures, a lot of investigations have been carried out on Human Machine Interfaces (HMIs), which are the ways to provide information to a motorcycle rider. In the past, we proposed Awareness Assistant Indicator (AAI), which gives directional indications to a rider, when he or she needs to pay attention to something while driving. In this paper, we will report the evaluation methods and the results of evaluations on the effects of AAI in relation to the maneuvering actions by employing the Riding Trainer (RT) in the assessments.

Abstract

Most public travel time information services nowadays are static. They give estimated travelling time from any point A to any point B, regardless of hours of day, days of week, or holiday patterns. However, for a heavily trafficked city with quite unpredictable traffic li...Lead moreMost public travel time information services nowadays are static. They give estimated travelling time from any point A to any point B, regardless of hours of day, days of week, or holiday patterns. However, for a heavily trafficked city with quite unpredictable traffic like Bangkok, static travel time information may not be informative enough for commuters. We propose constructing travel time profile based on attributes of time, day, and roads for a road network. Using a data warehouse schema, we demonstrate modeling dynamic travel time profiles of Bangkok roads. In future, other types of interesting information such as major sports events or road closures can add more richness to the model. The study shows that the data warehousing approach can empower traffic controllers and road users with answers to various types of travel time questions regarding various constraints.

Abstract

Although rapid aging of popularity causes serious traffic problem in Japan, only few studies have been conducted to investigate elderly drivers' behavior especially on expressway. Our statistical analysis of accident records showed that (1) toll barriers (TBs) are highly ...Lead moreAlthough rapid aging of popularity causes serious traffic problem in Japan, only few studies have been conducted to investigate elderly drivers' behavior especially on expressway. Our statistical analysis of accident records showed that (1) toll barriers (TBs) are highly accident-prone (2) a typical accident pattern of elderlies' is significantly different to that of non-elderlies' on TBs. Therefore, in this study, to know how elderly drivers behave at accident-prone areas on an expressway, we let 40 subjects drive the expressway and measured their driving behavior using multiple sensors (eye camera, video camera, etc.). Using measured sensor data, we evaluated and scored each subject's safe driving skill for preventing accidents based on driving instructors' knowledge. The result of evaluation was that elderlies' safe driving skill score at TB is significantly lower than that of non-elderlies'.

Abstract

There are some problems which should be solved in order to increase the penetration rate of electric vehicle (EV). One representative problem is the short cruising distance. It makes EVs frequently recharged. Moreover, it takes long time to recharge battery. However, it i...Lead moreThere are some problems which should be solved in order to increase the penetration rate of electric vehicle (EV). One representative problem is the short cruising distance. It makes EVs frequently recharged. Moreover, it takes long time to recharge battery. However, it is believed that EVs will contribute to the conservation of energy and environment. This study aims at analyzing the actual recharging behavior by traffic simulation and optimizing the location of recharging stations. The study area is the inside of Ring Route 8 in Metropolitan Tokyo, Japan. This paper also examines whether recharging behavior of EV causes extra congestion or not.

Abstract

The Vehicle Information and Communication System (VICS) provides road traffic information (VICS information) to drivers. One of the information provision media is FM multiplex broadcasting which has bandwidth constraints. Therefore broadcast program assigns the items of V...Lead moreThe Vehicle Information and Communication System (VICS) provides road traffic information (VICS information) to drivers. One of the information provision media is FM multiplex broadcasting which has bandwidth constraints. Therefore broadcast program assigns the items of VICS information priorities, and deletes the items of low priority if necessary. The broadcast program edits according to a table for controlling priorities (priority control table) that has presently a single pattern throughout the year. Then we planned to conduct a research to develop methods to select useful information to drivers according to the changes in road traffic or weather conditions. In this research we analyze temporal and spatial trends and identify patterns inVICS information, investigate the relationships of those patterns with the factors that cause the pattern incidence and try to confirm the possibility of deletion control of VICS information by multiple priority control tables defined based on the pattern analysis.

Abstract

Traffic jams are frequent problems due to increasing of traffics in urban areas. Apprising drivers of the accurate travel time has been attempted to divert the traffic and eliminate the traffic jam. With such a background, it is important to establish a method for accurat...Lead moreTraffic jams are frequent problems due to increasing of traffics in urban areas. Apprising drivers of the accurate travel time has been attempted to divert the traffic and eliminate the traffic jam. With such a background, it is important to establish a method for accurately estimation the travel time. In general, the estimation of the travel time is performed by using past data. As an example of this technique, the AVI (Automatic Vehicle Identification) system which calculates the travel time by analyzing images captured by a camera has usually been employed. However, a large-scale investment is required in realizing an AVI system which limits to its application. What’s more, the result which is obtained from the AVI system is not an estimation of travel time, but records of the past data. Regarding these problems, estimating travel time by analyzing the data from vehicle sensors is proposed in this paper.

Abstract

Field experiment for vehicular communications should be done with easy, accurate, fast evaluation tool. In this paper, we introduce our developed vehicular-to-X (V2X) communication performance evaluation tool, so called VPET (V2X communication performance evaluation tool)...Lead moreField experiment for vehicular communications should be done with easy, accurate, fast evaluation tool. In this paper, we introduce our developed vehicular-to-X (V2X) communication performance evaluation tool, so called VPET (V2X communication performance evaluation tool). Composition, functions, and protocol of messages for VPET are described.

Abstract

The system analyzing the data logged by in-vehicle video event data recorders (VEDRs) was developed and examined. It automatically analyzes their video, accelerometer, and GPS measurements at the occurrence of traffic near-accidents. Video data are processed by using the ...Lead moreThe system analyzing the data logged by in-vehicle video event data recorders (VEDRs) was developed and examined. It automatically analyzes their video, accelerometer, and GPS measurements at the occurrence of traffic near-accidents. Video data are processed by using the computer-vision algorithm of 3-dimensional generic object recognition to detect the object appearing in close front of the automobile.
The positions and movements of the automobile and the object are reproduced on a map in order to investigate the potential risk at the place where a near-accident occurred. This automated system realizes the statistical and spatial analysis of the risk of traffic accidents on the roads and crossings in towns.

Abstract

Conducting field trials is necessary to vehicular device and application development; however, it also requires great time and human resource to setup test scenarios and conduct experiments. To address this problem, in this paper, we develop and implement a new tool suite...Lead moreConducting field trials is necessary to vehicular device and application development; however, it also requires great time and human resource to setup test scenarios and conduct experiments. To address this problem, in this paper, we develop and implement a new tool suite to facilitate the deployment and execute of field trials. The developed tools have been used in field trials of vehicular application using WAVE/DSRC technology. The experiences show that our developed tool can greatly save the time and efforts for conducting field trials.

Abstract

In the field of ITS, GPS receivers are often used in multipath environments where cars and buildings are densely populated. In order to mitigate multipath, we have developed a technique called IMMT (Improved Multipath Mitigation Technique) which could pretend to surpass e...Lead moreIn the field of ITS, GPS receivers are often used in multipath environments where cars and buildings are densely populated. In order to mitigate multipath, we have developed a technique called IMMT (Improved Multipath Mitigation Technique) which could pretend to surpass existing multipath mitigation techniques. The experimental results show that position accuracy of 1 m or less achieves 90.5 % of time by using IMMT with Japanese Satellite Based Augmentation System (SBAS) called MSAS under multipath environments. IMMT is applicable to any grade of Global Navigation Satellite System (GNSS) receivers. It only requires differential corrections. By adding more GNSS satellites into IMMT, we have good prospect on our approach how to realize 1 m position accuracy.

Abstract

This paper introduces a system to reduce accidents in route buses resulting from the carelessness of the bus driver. The system is designed to provide the bus driver with a better view an otherwise obstructed spot inside and outside of the bus by linking the camera-equi...Lead moreThis paper introduces a system to reduce accidents in route buses resulting from the carelessness of the bus driver. The system is designed to provide the bus driver with a better view an otherwise obstructed spot inside and outside of the bus by linking the camera-equipped drive recorder to the vehicle data such as turn signals or the opening and closing of the door.

Abstract

This paper proposes cooperative autonomous vehicle system with infrastructure sensors. The current standalone autonomous vehicles suffer from reduced safety and expensive cost. The cooperative driving approach enhances driving safety of driverless cars. The cooperative au...Lead moreThis paper proposes cooperative autonomous vehicle system with infrastructure sensors. The current standalone autonomous vehicles suffer from reduced safety and expensive cost. The cooperative driving approach enhances driving safety of driverless cars. The cooperative autonomous driving system composed of cooperative autonomous vehicles and infrastructure system. The cooperative autonomous vehicles receive value-added safety information from the infrastructure through wireless communication. The vehicles may be free from blind spots and upcoming danger with the help of infrastructure system.

Abstract

According to the Intelligent Transport System (ITS) related systems and products were changed with each passing day and developed very fast. In the past, people care about the functionality of newer products/ systems and pursue the advanced system which could be applied i...Lead moreAccording to the Intelligent Transport System (ITS) related systems and products were changed with each passing day and developed very fast. In the past, people care about the functionality of newer products/ systems and pursue the advanced system which could be applied in the transportation systems. However, it made the product/ system quality is uneven and caused further operation problems (e.q., operation risk, finance risk or interface management between varied systems). In these circumstances, the quality related issues such as the reliability, availability, and maintainability were ignored, and a lot of unnecessary expenses were consumed during the product/ system life cycle as well. Hence, this paper describes the product certifications conceptions that can be available used to solve the above problems and introduces the effective method- Independent Verification & Validation throughout the life cycle of ITS products or system.

Abstract

Generally tunnel lighting equipment is cleaned by human power or cleaning truck using rolling brushes. In this case, it is necessary to one lane traffic regulation to avoid traffic accidents. We have introduced the high speed tunnel lighting equipment cleaning truck using...Lead moreGenerally tunnel lighting equipment is cleaned by human power or cleaning truck using rolling brushes. In this case, it is necessary to one lane traffic regulation to avoid traffic accidents. We have introduced the high speed tunnel lighting equipment cleaning truck using cavitation jet technology *1 (hereinafter referred to as "the Cavitation Cleaning Truck") since 2009. This cavitation cleaning truck can clean tunnel lighting equipment at 50km/h. We planned to speed up, improve safety and lighten the drive load using driver support system. This paper describes the project outline and the result of field test.

Abstract

A transportation authority needs to decide which section of a road should be closed to allow road works. There are often multiple ways to close a section of a road, and the way to close the section can have a significant impact on the traffic flows around the closed secti...Lead moreA transportation authority needs to decide which section of a road should be closed to allow road works. There are often multiple ways to close a section of a road, and the way to close the section can have a significant impact on the traffic flows around the closed section. We use IBM Mega Traffic Simulator (Megaffic), an agent-based simulator of traffic flows, to analyze the impact of a road closure on traffic flows for multiple ways of road closures. Our analysis gives insights as to how a section of a road should be closed for road works that are planned in Hiroshima city in Japan.

Abstract

This research proposes a method that estimates trajectories of all vehicles running along a road section by making use of incoming and outgoing vehicles in the midblock of the study section. The method for extracting the probe vehicles proper to estimate trajectories and ...Lead moreThis research proposes a method that estimates trajectories of all vehicles running along a road section by making use of incoming and outgoing vehicles in the midblock of the study section. The method for extracting the probe vehicles proper to estimate trajectories and application of incoming / outgoing probe vehicles in the midblock are future subjects.
Furthermore, this method can predict traffic condition in near future. For example in Fig.1, even based on input data (detector data and probe data) by time A, vehicle trajectories in region ABC can be predicted in which slope AC and BC are wave speed u and w respectively. Therefore, if current present time is A, from the estimated result in region ABC, we can tell a vehicle departing from the entrance of the study section at time A when it will reaches the tail of the queue and how long the queue length.

Abstract

According to optimal allocation of vehicle detectors, the possibility that reduction of large cost of detector's maintenance is planned by traffic signal control system increases, but the allocation of detectors is important to grasp an effect evaluation in real time, and...Lead moreAccording to optimal allocation of vehicle detectors, the possibility that reduction of large cost of detector's maintenance is planned by traffic signal control system increases, but the allocation of detectors is important to grasp an effect evaluation in real time, and a change of the traffic flow suggests by the main subject based on inspection about allocation for all traffic lanes in the outflow intersections around critical intersections.

Abstract

It is expected recently that the Electrical Vehicle (EV) explodes on a world wide scale against the background of the world wide promoting the conversion to non-fossil-fuel energy use. But the EV's driving distance is shorter than the Gas Vehicle's one which could lead to...Lead moreIt is expected recently that the Electrical Vehicle (EV) explodes on a world wide scale against the background of the world wide promoting the conversion to non-fossil-fuel energy use. But the EV's driving distance is shorter than the Gas Vehicle's one which could lead to the disincentive of the EV's growth. The various approaches are done to improve the EV's quality of experience.For example, the exact estimation of the power consumption is important at the vehicle navigation service to notify the allowable driving distance to the drivers.In this paper, we try to estimate the EV's power consumption by building the model formula of the power consumption in each road link.We make an attempt to adopt the distributed processing platform to lead the model formula. We report the development of the EV's power consumption estimation engine and the comparison result with the actual car driving data.

Abstract

In our residential area, we sometime meet heavy snow fall and drivers lose driving lane and go out. For the purpose of safety driving, we develop the vehicle navigation system with Ultra High Frequency (UHF) Radio Frequency Identification (RF-ID) to keep the driving lane....Lead moreIn our residential area, we sometime meet heavy snow fall and drivers lose driving lane and go out. For the purpose of safety driving, we develop the vehicle navigation system with Ultra High Frequency (UHF) Radio Frequency Identification (RF-ID) to keep the driving lane. The vehicle position in the lane is written on RF-ID tags and they are buried in road. Our experimental vehicle equips two RF-ID antennas which communicate with RF-ID tags and get vehicle location on the lane. This information is given to a driver by Graphical User Interface(GUI) and voice instruction. GUI shows vehicle location and direction to the center of lane.
In order to simulate low visible condition, we put a bubble wrap on windshield. Our system helps to keep the lane against low visible condition. Comparing presented system with one antenna system, two antennas system contributes to reduce the cost of installing RF-ID tags.

Abstract

In this paper, we have assessed various issues associated with the characteristics of the Chubu region and have reviewed the applicable information communication technology to present existing management methods for the purpose of advancing and optimizing road patrol. In ...Lead moreIn this paper, we have assessed various issues associated with the characteristics of the Chubu region and have reviewed the applicable information communication technology to present existing management methods for the purpose of advancing and optimizing road patrol. In each national highway office under the jurisdiction of the Chubu region, separate and different systems are used to transmit information during normal times as well as in times of disaster. Not only is this inconvenient from a user perspective but also it increases the cost of system maintenance. In recent years, low-cost and portable informational terminals have found widespread use. This has resulted in improvements in the speed and accuracy of communication between on-site terminals and the internet. Because of such improvements, there is a desire to introduce new systems.

Abstract

In this research, a database that unifies natural, disaster, and mobility information was constructed, and as an example of data fusion nalysis for generating new information, we developed an evacuation imulation and analyzed the road network from a disaster-prevention vi...Lead moreIn this research, a database that unifies natural, disaster, and mobility information was constructed, and as an example of data fusion nalysis for generating new information, we developed an evacuation imulation and analyzed the road network from a disaster-prevention viewpoint. We can understand how road sections were flooded and how vehicles were swept away by tsunami by utilizing tsunami information. Then, he reproducibility of the evacuation simulation results has not yet been verified, and it is necessary to do so by utilizing the trajectories data of vehicles.

Abstract

Vics Center has promoted event parking information service.As results,this service has produced gerat user satisfaction.Vics Center has promoted event parking information service.As results,this service has produced gerat user satisfaction.

Abstract

Recently, the amount of information which can be obtained increases by the upgrading of the internet and the rapid spread of mobile terminal. In the vehicle, the service which can be used while driving is increasing. But the unlimited service provision under driving can b...Lead moreRecently, the amount of information which can be obtained increases by the upgrading of the internet and the rapid spread of mobile terminal. In the vehicle, the service which can be used while driving is increasing. But the unlimited service provision under driving can become an obstructive factor of safety drive, so driver support system needs to be developed which controls the amount of information according to the driving situation and provides safe and comfortable service easy to use.
In this paper, a study of the driver support system which connected the vehicle thin client terminal which can respond easily to time evolution to the cloud information processing platform, and the test usefulness by a prototype system are described.

Abstract

It is important to grasp road information over a wide area for rescue and support activities after large-scale disasters, such as earthquake and tsunami. In this study, we extracted the blocked road regions in a large-scale disaster by using satellite images that are hard...Lead moreIt is important to grasp road information over a wide area for rescue and support activities after large-scale disasters, such as earthquake and tsunami. In this study, we extracted the blocked road regions in a large-scale disaster by using satellite images that are hardly affected by disasters. Moreover, we proposed a method that can be used in the case of not only earthquake damage, but also tsunami damage such as The Pacific coast of Tohoku Earthquake on March 11, 2011. The proposed method can be used to search for passable routes from among affected roads. We improve the method and propose a way of extracting the blocked roads with a higher accuracy.

Abstract

This paper presents an extraction model of stopping pattern at signalized intersections along corridor section. The probability of stopping and no-stop pattern and road segment's travel time are calculated for every segment between traffic signals based on vehicle's progr...Lead moreThis paper presents an extraction model of stopping pattern at signalized intersections along corridor section. The probability of stopping and no-stop pattern and road segment's travel time are calculated for every segment between traffic signals based on vehicle's progressing patterns and link travel time. And the application result is validated by using the probe car data. In future, using the extraction model, novel service such as route guidance and advice for passing through traffic signals effectively, shortening travel time and improving fuel efficiency will be developed and provided to drivers.

Abstract

In this paper, we consider the characteristics of the Chubu region and the initiatives of "ITS spot service" currently being deployed in the region. We present an outline of the regional characteristics and services, and the conditions of use for this service up to the cu...Lead moreIn this paper, we consider the characteristics of the Chubu region and the initiatives of "ITS spot service" currently being deployed in the region. We present an outline of the regional characteristics and services, and the conditions of use for this service up to the current point in time. Subsequently, we discuss improvements as well as future directions in the presentation of this service. "ITS spot service" is a new information service for road users that was initiated in Japan in 2011. The Chubu region is an important industrial production base located in the central region of Japan where climate conditions can greatly vary and large-scale earthquakes may occur, therefore, highly accurate and up-to-date information is desired for road users.

Abstract

On March 11, 2011, due to the fact that Shuto Expressway limited cars entering it and each train company suspended operations right after the Great East Japan Earthquake, cars converged on local streets causing long hours of traffic congestion. Although telephone, both l...Lead more On March 11, 2011, due to the fact that Shuto Expressway limited cars entering it and each train company suspended operations right after the Great East Japan Earthquake, cars converged on local streets causing long hours of traffic congestion. Although telephone, both land line and cellular phone, were the main communication tool during the major traffic congestion in the greater Tokyo area caused by the earthquake disaster, all of the telephones had bad connections because of the restriction in the volume of calls. Once a natural disaster occurs in the greater Tokyo area, and it may interfere with obtaining correct traffic information. This is a report to show the results of research and tests, to improve the ability to obtain and use the necessary information even during a natural disaster by diversifying the ways of obtaining traffic information, such as using the Internet.

Abstract

We propose a method of extracting vehicle queues in a satellite image by stepwise processing, in order to obtain traffic congestion information over wide areas. In the first step, using a satellite image and a digital map, we compute vehicle density from the number of veh...Lead moreWe propose a method of extracting vehicle queues in a satellite image by stepwise processing, in order to obtain traffic congestion information over wide areas. In the first step, using a satellite image and a digital map, we compute vehicle density from the number of vehicles on each road section by counting the front and rear edges of the vehicles. In the second step, we extract vehicle queues in the road lane on the basis of vehicle distance. By this stepwise processing, we omit a useless computation and reduce the effect of various noises to increase the accuracy of extraction.