Cruise-Assist Services Utilizing Up-Link Information
Harutoshi YamadaHiroshi MakinoMasao TakamuneMasahiro WakamiyaKenro TakenakaToshiyuki NomotoHiroshi Inoué
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Information on vehicle driving records and information acquired by vehicle sensors that has been accumulated by on-board unit in vehicles can be collected by roadside systems using DSRC (this process is hereafter called up-linking). Services that provide drivers with this cruise-assist information in real-time were studied. This study covered an overview of services, current problems, effects, necessary up-link information, and the feasibility of such services. There is also a report on the results of evaluating the equipment with a function of DSRC for the realization of these services.Keywords:
Dedicated short-range communications
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This article discusses the Road Traffic Advisor vehicle to roadside communications project in the U.K. One of the objectives of the project was to verify the concept of an open applications architecture system. It uses two-way short-range microwave communication between antennae on vehicles and roadside beacons enabling short and medium- range information services. Beacons were developed which would comply with the European standard for dedicated short-wave systems. Trials were initiated for two primary types of driver information: traffic and weather warning and speed advice to drivers.
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The objective of this project is to verify the feasibility of the designed system. The designed system is basically composed of three parts; in-vehicle location receiver, information management system, and Internet service system. The in-vehicle receiver acquires the vehicle positioning data using GPS and reports current vehicle location to information management system. The information management system makes communication links between moving vehicle and Internet service system, and collects the vehicle positioning data from in-vehicle receiver. The Internet service system provides the image of matching the vehicle positioning data and digital map, and uploads this image and traffic information to the web site. For the covering abstract see IRRD E102946.
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Recently, various services using road-vehicle communications have been put to practical use, and information on the running history and performance data of the vehicle is uploaded to the roadside and expanded to services that use it in addition to the information delivery from the roadside to the vehicle. The information interfaces with the navigation system and the electrical equipment control system after it meets intelligent transportation system (ITS) on-board unit Dedicated Short Range Communication (DSRC) standards. This terminal also mounts functions for observing the state of the vehicle and controlling the vehicle remotely from the roadside by DSRC. In this project, the protocol that connects the roadside with the in-vehicle network was developed. Additionally the in-vehicle information terminal and the roadside system were developed, which achieved reading and writing of vehicle data via DSRC and Controller Area Network (CAN). Moreover, car security was created as a DSRC application service, an experimental system was developed, and the usefulness of the service was evaluated.
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The authors have conducted research and development of Advanced Cruise-Assist Highway System(AHS) services which detect sudden deceleration, abrupt steering and other hazardous phenomena based on vehicle behavior data collected through car navigation systems in order to perform wide area monitoring of hazardous phenomena. Previous studies investigated the characteristics of vehicle behavior data and the suitability of threshold values for the identification of hazardous phenomena. This paper reports on a study of methods of uplinking vehicle behavior data based on the characteristics of a DSRC (Dedicated Short Range Communication) road-to-vehicle communication system and on the results of a verification performed to complete practical safe-driving support systems using DSRC road-to-vehicle communication systems which are installed on urban expressways.
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This paper gives an overview of the AMTICS advanced traffic information and navigation system. Through a screen display in each vehicle, the system provides traffic information relating to congestion, regulation, road work, and real-time parking. It also provides information on the vehicle's current position and the intended navigation route.
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Automated road or highway and advanced driving assistance systems (ADAS) are two important issues on transport research. The goal is to prevent accidents by developing safety applications and also to make available services such as information dissemination about points of interest. An essential part of these Intelligent Transportation Systems (ITS) researches is vehicular communications including Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (V2I) communications. IFSTTAR (French institute of science and technology for transport, development and networks), dedicated for vehicles and roads of the future, has the ambition to create an international testbed to evaluate driving assistance devices and roadside equipment.
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Vehicle infrastructure integration (VII) can enhance road safety, mobility and efficiency. By integrating automotive sensor and telecommunication technology, vehicles can acquire high temporal- and spatial-resolution information associated with roadway and environmental conditions through vehicle-to-vehicle (V-V) and vehicle-to-infrastructure (V-I) communications, e.g. dedicated short-range communication (DSRC). A wide range of vehicle safety and non-safety applications can be developed or enhanced by VII. The map-based driver assistance systems such as navigation and speed warning systems are such applications that can benefit from VII. This paper presents a Curve Overspeed Warning system developed by California PATH in the VII- California research project. This system utilizes the on-board digital map and enhanced map data transmitted from the road side equipment (RSE) to predict an upcoming curve and provide warnings to the driver if the speed is unsafe for this curve. A system overview and descriptions of the functional components are provided along with experimental results to show how the map-based driver assistant can improve driver’s safety through VII. In addition, technical issues associated with map update by integration of VII-enabled data are discussed.
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In this paper, we introduce a road alert information sharing system with multiple vehicles using Vehicle-to-Vehicle communication considering various communication network environment, which is named SODiCS (Spatial and temporal Omnidirectional sensor data Distribution and Collection System). Japan is prone to natural disasters. In addition, traffic hazards and traffic accidents occur due to snow. A wide range and quick condition understanding and monitoring are needed. In addition, it is important to understand the condition of the destination and the road condition to the destination. But, especially after a disaster has occurred, areas that mass media can provide disaster condition information are limited. Recently, various higher technologies have been developed and noticed. By using those technologies, we develop SODiCS. Using this system, we can realize road condition understanding, monitoring and recording as an alert information using multiple sensor data, information sharing between each vehicles and information is provided as web application. As a quantitative evaluation, we measure vehicle-to-vehicle communication quality.
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This paper describes the architecture, functionality, and field demonstration of a newly developed dedicated short-range communication (DSRC)–based vehicle-to-infrastructure communication system for improving traffic efficiency and safety in work-zone-related congestion buildup on U.S. roadways. The goal was to develop a portable system that could be easily deployed at a work-zone site to acquire and communicate important travel information, such as the start of congestion (SoC) and travel time (TT) of the driver. With this information, drivers could make informed decisions about route choice and be prepared for upcoming congestion. The system is composed of a portable roadside unit, which can engage the onboard units (OBUs) of traveling vehicles with DSRC technology to acquire necessary traffic data (speed, time, and location). With the acquired data, the roadside unit periodically estimates the SoC and the TT, which are broadcast to all vehicles in the coverage range. An OBU receiving the broadcast message calculates the distance to the SoC. The distance to the SoC and the TT are then relayed to the driver, who can make smart decisions about whether to seek an alternate route and when to expect a sudden speed reduction. Results from the field demonstration have shown that the developed system can adapt to a changing work-zone environment smoothly under various congestion patterns on the road.
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The vehicle monitoring system is to use GPS technology to locate the vehicle, the vehicle information through the communication network back to the monitoring center, monitoring center and then use GIS technology to analyse the vehicle information, the vehicle is displayed on the electronic map, and the vehicle control.Study of vehicle monitoring system, so that the function is more perfect, to a large extent, improve the safety of vehicle operation and road utilization, has broad application prospects. Background and significanceWith the rapid development of economy, China's transportation industry is also developing rapidly, the number of vehicles every year is growing at an alarming rate.However, with the rapid increase of vehicles, vehicle monitoring technology and management technology has lagged behind, has brought many serious problems, such as vehicle theft, traffic accidents, traffic congestion, waste of resources, the driver's personal safety, environmental pollution, etc..In order to adapt to the traffic of the rapid development, improve the urban traffic conditions, improving social security, ease traffic pressure, crack down on all kinds of grab the car, car theft activities and effective real-time management and monitoring of vehicles is very important, there is an urgent need to establish a fast and efficient, intelligent, real-time, command is in favour of the intelligent transportation system [1].Vehicle monitoring field has great application value and market prospect, which is an important part of Transport System Intelligent (Intelligent Transportation System).Intelligent transportation system (ITS) is the advanced communication technology, information technology, control technology, computer technology and sensor technology, and effectively integrated into the entire transport management system, and the establishment of a global, all-weather, high performance, real time, efficient, accurate transportation and management system.It effectively improve road traffic capacity, ease road congestion and less traffic accidents, reducing the rob car theft event occurs, reduce environmental pollution, reduce the consumption of energy [2].Vehicle monitoring system is a very important direction of ITS research.Vehicle monitoring system can provide a lot of important information, such as precise position of vehicle, vehicle direction, vehicle speed, vehicle driving speed, etc.. Vehicle monitoring center can be monitored by vehicle monitoring system to monitor the vehicle's situation as well as their driving situation, and when necessary, can give it to provide rescue information, such as vehicles in the vicinity of the hospital, etc.. Vehicle monitoring system can provide global, all-weather and high precision
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