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Abstract

Real-time accurate predicted traffic information is critical to intelligent traffic inducement and traffic management. We proposed a two-step learning algorithm - Genetic Gradient Algorithm (GGA) for RBF neural network. A genetic algorithm (GA) initially determines the pa...Lead moreReal-time accurate predicted traffic information is critical to intelligent traffic inducement and traffic management. We proposed a two-step learning algorithm - Genetic Gradient Algorithm (GGA) for RBF neural network. A genetic algorithm (GA) initially determines the parameters of the RBF network including not only the number and the locations of the selected centers but also the widths of Gaussian kernel functions in the hidden layer. Then a gradient descent algorithm is adopted to further adjust these parameters of the RBF network. Furthermore, we established an RBF network predicting model for traffic information prediction. The experimental results conducted on the real-time traffic speed information prediction in the city of Ningbo showed the good effects of our proposed methods.

Abstract

Public transportation priority strategy has three important aspects including improve the on time arrival rate of the vehicle, public transportation travel volume and improve public transportation service level. The text will discuss the Intelligence Transportation System...Lead morePublic transportation priority strategy has three important aspects including improve the on time arrival rate of the vehicle, public transportation travel volume and improve public transportation service level. The text will discuss the Intelligence Transportation System (ITS) Dispatching System Project concerning the public transportation dispatching system composition, public transportation dispatching system network design and dispatching software, the project has been implemented successfully with ideal effect.

Abstract

CCTV is the most effective tool for gathering the unusual road status by observing the monitor TV at the operation room. Each CCTV was equipped at specific site for specific purposes such as observing the accidents, congestion and unusual weather conditions. But the numbe...Lead moreCCTV is the most effective tool for gathering the unusual road status by observing the monitor TV at the operation room. Each CCTV was equipped at specific site for specific purposes such as observing the accidents, congestion and unusual weather conditions. But the number of CCTV is too large for operators to watch continuously. Furthermore, unusual situation dose not happen so often. Therefore, most CCTV is not used effectively. Considering those situation, authors are developing to use CCTV more effectively and usefully. We introduce the possibility of multipurpose usage and the basic analysis of travel time measurement using CCTV.

Abstract

ETC holds the balance on the express way management. Currently, the ETC system merely via communicate between the On-Board label and the roadside equipment, as a result it can't realize ETC for vehicles without label and most vehicles from ecdemic area and also can't embo...Lead moreETC holds the balance on the express way management. Currently, the ETC system merely via communicate between the On-Board label and the roadside equipment, as a result it can't realize ETC for vehicles without label and most vehicles from ecdemic area and also can't embody the advantage of ETC. So we apply fusion technology assist with logical toll strategy to develop a new pattern toll collection system in order to reduce vehicle's delay and smooth traffic flow. This system includes information recognition and charge management strategy Database. The system obtain vehicle's veridical information by applying fusion to recognize license plate, vehicle's model based on figure and on board label for toll rely on. The collection management strategy Database's is recognize entering vehicles at the entrance with vehicle info reorganization instrument installed in the entrance and exit of express which can be divided vehicles into 4 types. Application of this system can bring more advantage

Abstract

We think that a signal information provision system in the "Driving Safety Support System" (DSSS) is effective to avoid a head-on collision in a signal intersection. By this system, the infrared beacon which has enough actual results provides vehicles with information suc...Lead moreWe think that a signal information provision system in the "Driving Safety Support System" (DSSS) is effective to avoid a head-on collision in a signal intersection. By this system, the infrared beacon which has enough actual results provides vehicles with information such as signaling information or road alignment information. In this system, self-vehicle position which is distanced from an intersection (stop line) is important information. We adopted a method to sense the precise location of vehicles from communication establishment timing of an infrared beacon and an in-vehicle unit and planned the demonstration test which collected foundation data of the detection accuracy.

Abstract

ITS demand analysis is one of the fundamental steps of ITS plan. The application of fuzzy cluster analysis in analyzing ITS demand is studied for the first time, and the corresponding program is compiled by Visual Basic Application program. Some ITS demands during the Bei...Lead moreITS demand analysis is one of the fundamental steps of ITS plan. The application of fuzzy cluster analysis in analyzing ITS demand is studied for the first time, and the corresponding program is compiled by Visual Basic Application program. Some ITS demands during the Beijing Olympic Games are analyzed based on data that have been gathered by expert based survey in the process of the Beijing Olympic Transportation Plan. Three elementary results during the analyzing process have highly consistency, and the ultimate result reflects the characteristic and relation of those ITS demands. Therefore, the practicability of fuzzy cluster analysis is demonstrated.

Abstract

Ever since ETC services were first launched in Japan in March 2001, its on-board units have rapidly grown in popularity. ETC systems are now entering a new phase, including various purposes requested and the full-scale use of ETC in motorcycles.In this paper, I will expla...Lead moreEver since ETC services were first launched in Japan in March 2001, its on-board units have rapidly grown in popularity. ETC systems are now entering a new phase, including various purposes requested and the full-scale use of ETC in motorcycles.In this paper, I will explain the current situation of ETC in Japan, various toll discount services and ETC services for motorcycles, aimed at further promoting the popularization of ETC. I will also describe the state of endeavors up to the present time concerning various purposes requested.

Abstract

JARI has verified functions of Inter-vehicle communication (IVC) protocols for safe driving support through field experiments and simulations. Through the FY 2005 study on IVC using 5.8GHz band, we found relay function is effective for non-line-of-sight environment. Also ...Lead moreJARI has verified functions of Inter-vehicle communication (IVC) protocols for safe driving support through field experiments and simulations. Through the FY 2005 study on IVC using 5.8GHz band, we found relay function is effective for non-line-of-sight environment. Also we found that simple relay may cause congestion of communications when the number of communicating vehicles increases. To resolve this issue, a new system of relay control protocol suitable for safe driving support applications is proposed. In FY 2006, we verified the proposed relay control protocol through field experiments and simulations. This paper introduces the accomplishment of these experiments and simulations.

Abstract

We studied about a visible light communication system for ITS application. Visible light communication uses visible light for communication. For example, information is transmitted by blinking LEDs rapidly. As for ITS application, a roadside to vehicle communication such ...Lead moreWe studied about a visible light communication system for ITS application. Visible light communication uses visible light for communication. For example, information is transmitted by blinking LEDs rapidly. As for ITS application, a roadside to vehicle communication such as roadside lights, information boards and traffic signals, vehicle to vehicle communication, and pedestrian information system are possible. In this paper, we examine the applications listed above and some problems. And we report the evaluation results of our experimental system.

Abstract

Governments in most industrial countries are wrestling with how to create an efficient and sustainable transport system at minimal public expense. Around the world, in different ways, different models are being proposed, which seek to balance these costs of infrastructure...Lead moreGovernments in most industrial countries are wrestling with how to create an efficient and sustainable transport system at minimal public expense. Around the world, in different ways, different models are being proposed, which seek to balance these costs of infrastructure provision - so critical to economic transformation goals - with the benefits of making those costs more 'real' to users. This paper will explore: Should we be spending Government funding to curb the problems stemming from our current transportation system? Do we need to create controls and incentives to limit the ever-increasing rise in automobile use? Should the public be paying for the roads as they do for every other utility? What are the options? How might international experience be applied in NZ?

Abstract

This paper proposal includes the case study of Tianjin Metro Line 1 Automatic Fare Collection system, which has been recently opened to the public. This AFC system has become one of the worlds first fully contactless AFC systems, which proposes as an innovative solution f...Lead moreThis paper proposal includes the case study of Tianjin Metro Line 1 Automatic Fare Collection system, which has been recently opened to the public. This AFC system has become one of the worlds first fully contactless AFC systems, which proposes as an innovative solution for the single ride title the contactless token. Another topic that it’s included inside this paper proposal it’s the Contactless Fare Integration for Tianjin´s Public Transport system which was designed to integrate not only public transportation but also city taxis, and it is prepared for electronic purse in the future.

Abstract

The overview of the development and feature of the expressway in Shanghai are introduced. Several control algorithms are reviewed and the Alinea algorithm is proposed as the experimental algorithm. The history data is analyzed and the time period for control is determined...Lead moreThe overview of the development and feature of the expressway in Shanghai are introduced. Several control algorithms are reviewed and the Alinea algorithm is proposed as the experimental algorithm. The history data is analyzed and the time period for control is determined. Signal cycle and some practical problem are considered for implementation. The practical experiment plan is designed. The effectiveness is verified through practical experiment.

Abstract

Transport systems of most Chinese cities are in large-scale construction period, to make the decision of planning and construction more scientific and to make urban transport management finer is the chief task of Intelligent Transport System (ITS) construction in big citi...Lead moreTransport systems of most Chinese cities are in large-scale construction period, to make the decision of planning and construction more scientific and to make urban transport management finer is the chief task of Intelligent Transport System (ITS) construction in big cities of China. “Shenzhen Urban Transport Simulation System” is based on the multi-sources data collection, taking the transport simulation technology and the model as a core, making the intelligent transport shared information platform as an information exchanging and sharing pivot, and taking the support of transport planning, decision-making analyze and transport information service as a direction.

Abstract

Formerly, to update the map in the car navigation system, the customer had to visit the dealer to replace the entire national map (at most 1 to 2 times per year). Instead of the above method, Toyota Motor Corporation has implemented a method of successively updating the m...Lead moreFormerly, to update the map in the car navigation system, the customer had to visit the dealer to replace the entire national map (at most 1 to 2 times per year). Instead of the above method, Toyota Motor Corporation has implemented a method of successively updating the map by distributing only the changed data, via mobile phones or the Internet, starting in the spring of 2007. Consequently, the latest map information can be greatly enhanced, and when new expressways and toll roads are added, it can be distributed about one week after opening for traffic.

Abstract

Wheelchair users increase in volume since change of society composed largely of elderly people. Aiming to assist wheelchair trips, a navigation system which guides wheelchairs to a route of least physiological load was studied. To realize the system, estimation models of ...Lead moreWheelchair users increase in volume since change of society composed largely of elderly people. Aiming to assist wheelchair trips, a navigation system which guides wheelchairs to a route of least physiological load was studied. To realize the system, estimation models of wheelchair traveling load (link cost) were developed adopting the physiological fatigue as a common scale for plural wheelchair trip obstacles. Collecting brachii electromyograms experimentally, the fatigue scale (iEMG) was made out by integrating and normalizing the data. Using the scale iEMG, link cost estimation models were created. Applying the estimation models for wheelchair trips on actual streets, the estimation accuracy of the models was confirmed being comparatively well and enough to utilize them for a wheelchair navigation system.

Abstract

This paper presents the TRIPOLI system that identifies POIs (Points Of Interest) and evalu-ate them automatically from floating car data. Recently finding and comparing favorite POIs by POI evaluation sites is common. However such evaluation owes mainly to human data entr...Lead moreThis paper presents the TRIPOLI system that identifies POIs (Points Of Interest) and evalu-ate them automatically from floating car data. Recently finding and comparing favorite POIs by POI evaluation sites is common. However such evaluation owes mainly to human data entry thus it isn’t really real-time. The TRIPOLI system enables real-time POI evaluation us-ing floating car data. We assumed arrivals of floating car to POI presents the popularity of the POI. To evaluate our assumption, we performed comparison between floating car arrivals and web traffic. The results indicate the feasibility of the automated real-time POI evaluation sys-tem.

Abstract

Since their debut in 1981 as a typical platform for delivering driver information services, car navigation systems have now entered a stage of full-scale deployment in Japan. One reason for this development is their improved performance and lower prices as a result of adv...Lead moreSince their debut in 1981 as a typical platform for delivering driver information services, car navigation systems have now entered a stage of full-scale deployment in Japan. One reason for this development is their improved performance and lower prices as a result of advances in information technology (IT). Another reason is the standardization of an in-vehicle VICS (Vehicle Information and Communication System) unit for displaying real-time traffic information on the car navigation monitor. In addition, telematics services that contribute to a comfortable driving environment were launched in 1995. Facilitating exchanges of information between vehicles and the outside world, these services are accessed by connecting a mobile phone or other portable device to the car navigation system. This paper describes the latest trends in car navigation and telematics services in Japan.

Abstract

This paper introduces a function that includes traffic information in the car navigation system by using FM multiplex communication (DARC method) through broadcast wave. The broadcast wave is employed as communication media that provides cars with traffic information. Thi...Lead moreThis paper introduces a function that includes traffic information in the car navigation system by using FM multiplex communication (DARC method) through broadcast wave. The broadcast wave is employed as communication media that provides cars with traffic information. This system is to be realized by Beijing Traffic Information Center as a car navigation system that is capable of providing traffic information.

Abstract

The paper organized the existing state of Japanese navigation manufactures, analyzed the characteristics of new navigation products in Japan, and pointed out the tendency of Japanese navigation industry in the next five years. Simultaneously, the situation and characteris...Lead moreThe paper organized the existing state of Japanese navigation manufactures, analyzed the characteristics of new navigation products in Japan, and pointed out the tendency of Japanese navigation industry in the next five years. Simultaneously, the situation and characteristics of Chinese navigation industry were also got investigated. In the matter of the developing navigation business in China, considering of the navigation product with multiple types, such as personal navigation assistant (PNA), car navigation device, smart phone etc., we constructively proposed the several new measures to support the growth of Chinese navigation industry.

Abstract

This document is a report on the usability of automatic vehicle identification devices that are capable of gathering traffic data (traffic volume, travel time, etc.) in traffic surveys conducted in sightseeing areas. The report is based on results obtained through the emp...Lead moreThis document is a report on the usability of automatic vehicle identification devices that are capable of gathering traffic data (traffic volume, travel time, etc.) in traffic surveys conducted in sightseeing areas. The report is based on results obtained through the empirical application of such devices. The accuracy of automatic vehicle identification devices is improving dramatically due to developments in image processing and other technologies. Conducted together with a performance evaluation, the empirical application confirmed that gathering of highly precise data is possible. It should be noted that the automatic vehicle identification devices used in this project were developed based on the following specifications: Detection rate of 95% or more, recognition rate of 95% or more, and maximum speed of 140 km/h.

Abstract

In this paper, we describe effects of increasing angular coverage of automotive radar. Multi-path signal caused by sound barrier wall is observed with increasing the coverage. This degrades the target recognition performance due to the increase in number of receiving sign...Lead moreIn this paper, we describe effects of increasing angular coverage of automotive radar. Multi-path signal caused by sound barrier wall is observed with increasing the coverage. This degrades the target recognition performance due to the increase in number of receiving signals. We introduce a receiving antenna that has eight array elements into the radar to increase maximum number of the detectable signals. After all we confirm early acquisition of new targets at cut-in situation.

Abstract

In March, 2006, the Aichi ITS Council with the cooperation of the public, private sector and academia to promote our regional ITS published descriptive literature with full details about how ITS could be utilized for regional development. We currently intend to promote ac...Lead moreIn March, 2006, the Aichi ITS Council with the cooperation of the public, private sector and academia to promote our regional ITS published descriptive literature with full details about how ITS could be utilized for regional development. We currently intend to promote active utilization of the literature and aim to realize the introduction of ITS into measures and policies of municipal governments in Aichi prefecture. In this paper we describe our first trial which is to make specific proposals about utilization of ITS to the tourism renaissance program in Chita area, Aichi, Japan around the Central Japan International Airport opened in 2005.

Abstract

The dilemma-zone avoidance control was developed in order to prevent the read-end or head-on collision at an intersection with the traffic signal in changing the signal phase. It utlises the speed detectors and controls to let vehicles avoid the dilemma zone and the optio...Lead moreThe dilemma-zone avoidance control was developed in order to prevent the read-end or head-on collision at an intersection with the traffic signal in changing the signal phase. It utlises the speed detectors and controls to let vehicles avoid the dilemma zone and the option-zone. The suitable areas for the dilemma-zone avoidance control can be a downstream place of an overpass, a decline or a section that traffic signals are installed in the long interval. It turned out that many rear-end or head-on collisions occur in those places from the real traffic situation within the jurisdiction. But it is difficult to install the effective speed detectors for the dilemma-zone avoidance control in the overpass and it means that installing that control is impossible. We installed the dilemma-zone avoidance control with the new vehicle detectors in the intersection with the traffic signal that is located at the downstream place of the overpass, which was impossible for us to install it. This

Abstract

The Tokyo Metropolitan Police Department (TMPD) reviewed the functions of the traffic signal control when the traffic control system in the police traffic control centre was renewed in 1995 and the total traffic congestion length in the Tokyo metropolitan area was improve...Lead moreThe Tokyo Metropolitan Police Department (TMPD) reviewed the functions of the traffic signal control when the traffic control system in the police traffic control centre was renewed in 1995 and the total traffic congestion length in the Tokyo metropolitan area was improved. But the traffic congestion time reaches 6,400 km*hour per day and it is estimated that the economic loss is 51.8 billion yen per year and CO2 emitted from the stopping vehicles in the congestion is 360,000 ton per year. Those are obstructions to the economic activities and the environmental preservation. This paper is about the advancement of the signal control algorithm, which was carried out when the new central unit was replaced in the police traffic control centre (PTCC), and its effect, based on the real case of the improvement to the congestion.

Abstract

The large-scale destruction of the city infrastructure by the Hanshin-Awaji big earthquake in 1995 is still remembered in the public and the large-scale electric power failure occurred in the Tokyo metropolitan area in 1999 and 2006. In the power failure of 2006, more tha...Lead moreThe large-scale destruction of the city infrastructure by the Hanshin-Awaji big earthquake in 1995 is still remembered in the public and the large-scale electric power failure occurred in the Tokyo metropolitan area in 1999 and 2006. In the power failure of 2006, more than 400 traffic signals were shutdown in the Tokyo metropolitan area. There were about 100 traffic signals with the automatic generators in them. And the countermeasure against the traffic disorder was not absolutely enough. Therefore the need for the generators for the traffic signals was demanded more, the TMPD will start to enhance the installation from 2007 financial year. This paper introduces the automatic start-up generators for the traffic signals as the measure of the metropolitan disaster prevention.

Abstract

In the ITS (Intelligent Transportation Systems) world, NEC has been research and development of various technologies, which provide entertainment contents like a traffic information, driver assistance systems and pedestrian navigation services via network using infrastruc...Lead moreIn the ITS (Intelligent Transportation Systems) world, NEC has been research and development of various technologies, which provide entertainment contents like a traffic information, driver assistance systems and pedestrian navigation services via network using infrastructure cooperation systems. So, NEC has developed on board mobile router, and it features a good adaptability to mobile network environment and also has a good performance by accumulating of demonstration experiments. NEC endeavors to develop it as manufactured products in the ITS world rapidly.

Abstract

ETC (Electronic Toll Collection) allows charging for the use of road infrastructures minimizing traffic disturbances, achieving a better social acceptance and reducing costs. However, most road pricing strategies nowadays are not based on satellite positioning. This paper...Lead moreETC (Electronic Toll Collection) allows charging for the use of road infrastructures minimizing traffic disturbances, achieving a better social acceptance and reducing costs. However, most road pricing strategies nowadays are not based on satellite positioning. This paper presents system architecture of multiservice ETC system based on GNSS (Global Navigation Satellite System). The operating principles are described along with service functions. The detailed design and functions of three subsystems (i.e. Tolling Service centre, On board Unit and Law Enforcement System) are presented as well. Finally the paper gives a brief analysis on the feasibility of GNSS-based road pricing in China.

Abstract

Most traffic volume surveys are done by manual counting, and so a new traffic counting device needs to be developed to reduce survey costs. This paper reports on a portable vehicle traffic counter system, which does not require power supply wiring, and is easy to install ...Lead moreMost traffic volume surveys are done by manual counting, and so a new traffic counting device needs to be developed to reduce survey costs. This paper reports on a portable vehicle traffic counter system, which does not require power supply wiring, and is easy to install and remove in almost any location as required. Field tests have shown that the precision of the device is more than 95%.

Abstract

This article describes the result that we experimented on with a field of Toyota-City about vehicle-infrastructure cooperative system. In the field experiment, an on-board unit is equipped for the vehicles and records a driving action of a driver. Then we observe a change...Lead moreThis article describes the result that we experimented on with a field of Toyota-City about vehicle-infrastructure cooperative system. In the field experiment, an on-board unit is equipped for the vehicles and records a driving action of a driver. Then we observe a change of a driving action of the drivers by the information provision. The experiment result and effect of accident reduction is described. Also problems on developing vehicle-infrastructure cooperative system are pointed out.

Abstract

Using the digital tachograph in combination with DSRC(Dedicated Short Range Communication) produces effects in fleet management. Specifically, drivers can receive appropriate information in a timely fashion while remaining in a vehicle. Also, driving data can be transmitt...Lead moreUsing the digital tachograph in combination with DSRC(Dedicated Short Range Communication) produces effects in fleet management. Specifically, drivers can receive appropriate information in a timely fashion while remaining in a vehicle. Also, driving data can be transmitted from the digital tachograph to an office through DSRC. This allows the automation of the production of a daily journal that illustrates the driving data in detail. Consequently, the combined use of digital tachographs and DSRC will reduce the workload of drivers, make vehicle allocation more efficient, and improve fuel efficiency.

Abstract

The authors are developing a system that provides safety and convenience to drivers through onboard cameras. This paper proposes an algorithm method that detects moving objects while the car is in motion. The proposed method is based on the image converted into overhead v...Lead moreThe authors are developing a system that provides safety and convenience to drivers through onboard cameras. This paper proposes an algorithm method that detects moving objects while the car is in motion. The proposed method is based on the image converted into overhead view and an image difference method using the movement amount obtained by the onboard sensor. Furthermore, by analyzing the shape of the area detected through the image difference method, the shadow area changed due to the host vehicle movement is removed. Experiments show that the proposed method is effective under the real-world conditions.

Abstract

The use of Dedicated Short Range Communication (DSRC) for vehicular safety applications are investigated and developed in automotive industry. Vehicle to vehicle (V2V) communication is one of the most valuable technologies for the goals. On the other hand, Radio environme...Lead moreThe use of Dedicated Short Range Communication (DSRC) for vehicular safety applications are investigated and developed in automotive industry. Vehicle to vehicle (V2V) communication is one of the most valuable technologies for the goals. On the other hand, Radio environment for V2V communications is not clarified at this moment. This paper describes the methodology for the consideration of the radio environment for V2V communication. It also mentions the developed practical radio signal generator and its usage.

Abstract

Abstract: this paper studies the data processing and traffic state algorithm for urban expressway. With the application in the Shanghais expressway project, through comparing a large body of data, this paper discusses the application problems and of traffic state estimati...Lead moreAbstract: this paper studies the data processing and traffic state algorithm for urban expressway. With the application in the Shanghais expressway project, through comparing a large body of data, this paper discusses the application problems and of traffic state estimation algorithm and the solutions for the encountered problems in application.

Abstract

As a low-latency vehicle-to-vehicle (v2v) communication for safe driving, we have proposed a new MAC (Media Access Control) protocol. By a computer simulation based on a model of real road environment, we confirmed our MAC based on "Slot synchronized CSMA" has its low-lat...Lead moreAs a low-latency vehicle-to-vehicle (v2v) communication for safe driving, we have proposed a new MAC (Media Access Control) protocol. By a computer simulation based on a model of real road environment, we confirmed our MAC based on "Slot synchronized CSMA" has its low-latency performance of less than 100msec for more than 100vehicles. And an onboard unit (OBU) for wireless communication introducing our MAC protocol is presented.

Abstract

In a process of map-making based on aerial ortho photograph, we perform the input by the hands who used photogrammetry stereo plotter conventionally, and the technique is already established. However, It is mainly just used as a background map. The data of the road networ...Lead moreIn a process of map-making based on aerial ortho photograph, we perform the input by the hands who used photogrammetry stereo plotter conventionally, and the technique is already established. However, It is mainly just used as a background map. The data of the road network made out with reference to them is used for en- route guidance by car navigation. The result of having made out a marking from aerial photograph at first hand, it is hardly used as a middle result for generating a network to the end. If a network map becomes the basis of not only the object for guidance but the data for driving assist and vehicle control, at the usage, there must be no necessity as a background map. It is thought in the process which creates this road network that quite automatic processing will be possible. The input by people in the process of making to figure part decreases, and it leads to shortening the entire working hours.

Abstract

Multi-Scale two-dimensional wavelet transform is imported to analyze and detect the visibility of the express way in order to determine the atmosphere situation by the computer, and then improve the service. High frequency information, from which feature parameters are bu...Lead moreMulti-Scale two-dimensional wavelet transform is imported to analyze and detect the visibility of the express way in order to determine the atmosphere situation by the computer, and then improve the service. High frequency information, from which feature parameters are built, is extracted from the image by wavelet transform. Through analyzing the correlation coefficient between feature parameter and visibility grade, we find the feature parameter can be taken as the input value for pattern recognition by neural network to evaluate fabric wrinkle grade. Output of the neural network is the five grades of atmosphere visibility in the place where the camera is fit. Optical visibility detection instrument is used as a comparison with the algorithm in the testing experiments, and the results show that this visibility algorithm is effective and robust.

Abstract

In the snowy region, frequent existence of slippery condition brings driver to the highly strained situation in driving. Informing the location of the slippery condition on road would ease the tense of driver for driving. In this study, detailed data from the vehicle is u...Lead moreIn the snowy region, frequent existence of slippery condition brings driver to the highly strained situation in driving. Informing the location of the slippery condition on road would ease the tense of driver for driving. In this study, detailed data from the vehicle is used to detect the road surface condition. Pilot program about collecting the slippery location from the probe car and informing this through website was stated from 12/22/2006. Currently 11 vehicles are running in the Akita City. User could understand the current location of slippery road condition through the website and enable to drive without anxiety

Abstract

In this study, an intelligent parking assistance system with a function of reversing route guidance has been developed through the integration of trajectory arithmetic unit, steering wheel angle sensor, rear camera, and monitor. The key mathematical model of vehicle rever...Lead moreIn this study, an intelligent parking assistance system with a function of reversing route guidance has been developed through the integration of trajectory arithmetic unit, steering wheel angle sensor, rear camera, and monitor. The key mathematical model of vehicle reversing trajectory was systematically established based on the theory derivation and experimental verification. This trajectory model is universal and applicable to almost types of vehicles just by replacing basic vehicle dimensions. The predicted trajectory can be instantaneously calculated according to the angle of steering wheel and superimposed onto the image shown on the monitor to let the driver know beforehand where the vehicle will go. Besides estimated reversing route, the extension lines of vehicle width as well as distance reference lines were designed to provide the driver more information about vehicle attitude and interval between obstacles.

Abstract

In order to promise the quality of ITS System, it should be better to introduce some tests to provide confidence for ITS system. Now we present to you with a practice on ITS system based on NTCIP. Use the V-model test theory, we show you what we could do on ITS system aft...Lead moreIn order to promise the quality of ITS System, it should be better to introduce some tests to provide confidence for ITS system. Now we present to you with a practice on ITS system based on NTCIP. Use the V-model test theory, we show you what we could do on ITS system after the manufacture put up the system. All the tests include function test, protocol conformance test and system performance test.

Abstract

In recent years, traffic event detection has become an important topic in Intelligent Transportation Systems. A novel method to extract jam events by analyzing the road background feature is developed in this research. The proposed algorithm includes two stages: backgroun...Lead moreIn recent years, traffic event detection has become an important topic in Intelligent Transportation Systems. A novel method to extract jam events by analyzing the road background feature is developed in this research. The proposed algorithm includes two stages: background extraction and jam detection. The background image was extracted by performing the difference on three consecutive frames. According to the extracted background, we analyze the mean and variance of the input image to detect traffic jam. The proposed method has been tested on a number of traffic-image sequences and the experimental results show that the algorithm is robust and real-time.