The potential applications of artificial neural networks (ANNs) to intelligent vehicle-highway systems (IVHSs) are evaluated, and the extent of use and the position of ANNs in future IVHS implementations are discussed The state of the art and the potential implementation needs of IVHSs are reviewed, and the characteristics, properties, limitations, and application domains of ANNs are discussed from a technical perspective On the basis of review and discussion, potential application domains of ANNs to IVHSs are evaluated A technical demand-supply matrix is provided to indicate the most possible potential application domains of ANNs to IVHSs As an application case study of ANNs in the implementation of IVHSs, an ANN-based model is established for vehicle travel time estimation The results and findings associated with the development of the neural network-based travel time estimation model are also reported It is concluded that (a) ANNs can provide most techniques needed by IVHSs, and (b) for some IVHS implementation domains, ANNs may be superior to conventional techniques The case study demonstrates the modeling feasibility of ANNs for potential IVHS implementations

Applications of artificial neural networks to intelligent vehicle-highway systems

This paper describes new driver-information systems that are suggested for cars of the 21st century and proposes a method for selecting them. This method will help government officials, product planners, engineers, designers, and scientists identify functions and features that will be most beneficial to drivers. The systems (functions) of interest were navigation, vehicle monitoring, traffic information, road-hazard warning, communications, motorist services, in-car signing, office functions, and entertainment. Features and information elements of these systems were identified and rated on three dimensions: effect on accidents, impact on traffic operations, and driver needs and wants. Based on the ranking of features, information about slick roads, accidents, congestion, construction, blocked views, emergency vehicles, and tire and brake problems would be particularly beneficial.

What functions and features should be in driver information systems of the year 2000

The Super Smart Vehicle System(SSVS) is information systems for drivers 20 - 30 years from now which are solutions to problems caused by automobiles and automobile traffic. The two year studies on the SSVS was begun in 1990 fiscal year under support by MITI. In this paper, first, present status and problems of automobiles and automobile traffic in Japan are described, and then, histories of information systems for automobiles and automobile traffic in Japan, which were efforts for the solutions, are explained. Japan has long histories in the information systems, where the CACS and the Intelligent Vehicle with machine vision were developed. The SSVS, integrating driver information systems and vehicle control systems, has been derived from a new concept of info-mobility, and the SSVS is realization of the info-mobility. The SSVS consists of 4 fields: information systems for a single vehicle, information systems for inter-vehicles, information systems for vehicle-to-road relations, and studies on vehicle-to-driver relations. Some of system candidates proposed for the SSVS are introduced.

Super smart vehicle system&#8212;Its concept and preliminary works

Related Projects in Japan In order to successfully launch the info-mobility or IVHS/RTI systems in the society, many advanced technologies could be properly utilized with necessary R&D and related activities. The realizations of the info-mobility related systems also require relatively long time range from concept and R&D stages to final realization of the systems. How to efficiently coordi- nate these different stages ranging many years could be one of the important and difficult problems we face today to successfully launch the systems in the society. This paper describes the follow- ing items with some examples of the past and presently on-going info-mobility related projects in Japan, i.e., roles of public organizations, phases of activities, cooperations between public and private sectors, etc. TOTAL NUMBER OF THE AUTOMOBLIES in use in Japan has reached to a level of 58 million units in 1990, meaning that one of two people owns an automobile in the total population of 120 million. Whereas the road infrastructures satisfying the auto- mobile traffic are not well established compared with the US and Europe. * Numbers in parentheses designate references at end of paper. Hironao Kawashima Keio University Haruki Fujii Assn. of Electronic Tech. for Auto. Traffic and Driving (JSK) Kozo Kitoh JSK Info-Mobility Res. Committee The expressway extension per 1000 vehicles accounts for ca. one fifth and one third of those in the US and Germany, respectively, i.e., high density traffic with extended expressways of 5200km. As for normal road, the situations are similar to those of expressways. Narrow and small flat area of Japan makes also difficult to construct the road network. Under these circumstances, National Police Agency and Ministry of Construction have been making their respective invest- ments for the constructions of traffic control system and road traffic information providing-device continuously rather from early days. Presently, the traffic control systems are already introduced in 74 cities across the nation. As for the domestic market of auto- mobiles, the auto manufacturers have been placed under severe competitive conditions in terms of launching new models especially equipped with new features favorable for consumers. In these regards, the intensive uses of micro-electronics and communication technology are strongly acknowledged as the market trend compared with those of the US and Europe, enabling the launch of auto- mobile navigation system. Beside these typical Japanese back- grounds above, those problems, such as increasing traffic accidents, growing number of elderly people, global environ- mental problems, etc., have come out. In order to meet the existing and newly coming out problems Japan faces today, extensive use of information technology, moreover the integration of automobile and road funct- ions, i.e., the realization of the info-

https://rosap.ntl.bts.gov/view/dot/2644/dot_2644_DS1.pdf

A comparison of ivhs progress in the united states, europe, and japan

The super smart vehicle system (SSVS) is a new information system for automobile drivers to solve problems caused by automobiles and road traffic. It is based on the concept of info-mobility. SSVS deals with four fields: information systems for a single vehicle, for inter-vehicles and for vehicle-to-road relations, and studies on vehicle-to-driver relations. The system candidates include: a cooperative driving system, a control configured vehicle system, an active driver assistance system, an intelligent infrastructure, intelligent logistics, and machine vision; however, SSVS focuses mainly on advanced vehicle control systems (AVCS). The effects of SSVS on the safety of automobile traffic are also evaluated. >

Kozo Kitoh

Papers

Info-mobility: a concept for advanced automotive functions toward the 21st century

Some structural aspects on the "info-mobility" related projects in Japan