Advanced Traffic Control Center and Research Institutes in Japan

The Japan trip has been made with the following aims: -- To study the most advanced Japanese traffic systems concerning the used concepts for computer control, the applied methodology and the results and experiences obtained in real applications, as well as expected from simulation studies. It was already well known that some of the most advanced traffic control systems are in operation in Japan. On the other hand, no detailed information has been published in English. Therefore, one purpose of the trip was to provide a possibility for personal discussions with leading scientists and engineers on the latest state-of-the-art and about Japanese answers to the questions: What contribution one expects in Japan from advanced computerized urban traffic control systems in the reduction of the serious present and future urban traffic problems, i.e. concerning congestion, accidents and fatalities, endangering of the urban environment (noise and air pollution) and resource consumption (energy, land)? -- The visit was to provide one essential part of the information needed for an international comparative analysis which shall result in a state-of-the-art report of the urban project, leading to a manuscript for a volume on Computerized Urban Traffic Control and Guidance Systems (CUTC) of IIASA's state-of-the-art series. -- One special aim of the trip was to have personal discussions with possible Japanese co-authors to that CUTC volume, who should be asked to prepare case descriptions on advanced Japanese systems. -- The trip should be used for asking some leading Japanese scientists for contributions to the IFAC Workshop "Optimization Applied to Transportation" (Vienna, February 1976), co-sponsored by IIASA

Transportation Systems Analysis

In 1975, IIASA decided to co-sponsor the IFAC Workshop on Optimization Applied to Transportation Systems, scheduled to take place in Vienna from 17 to 19 February, 1976. Professor Howard Raiffa, then Director of IIASA, proposed that the Institute take advantage of the presence in Vienna of transportation experts by holding a small meeting at IIASA. The meeting would identify possibilities for both future in-house transportation research activities and external cooperation with national research institutes in the countries of IIASA National Member Organizations (NMOS)

Computerized Urban Transportation Systems in the U.S.A - A Trip Report

The U.S. trip was undertaken with the following aims: (1) To provide one essential part of the information needed for the preparation of the volume on "Computerized Urban Traffic Control and Guidance Systems (CUTC)" of IIASA's state-of-the-art series. This CUTC volume will contain several case descriptions dealing with advanced computer applications operational in tile U.S. Therefore, an essential concern of the trip was to meet with possible authors of these case descriptions and to visit the corresponding advanced systems. (2) To meet with possible participants for a planning conference on future transportation research work at IIASA. This conference will take place during the week of February 16-20, 1976, in connection with the IFAC workshop on "Optimization Applied to Transportation" sponsored by IIASA. (3) To take part in the IFAC (International Federation on Automatic Control) World Congress in Boston, August 24-10, 1975; presentation of a paper and serving as vice-chairman of session 4, "Transportation Systems.

How to Make City Traffic Adaptive on an Algorithm for the Adaptive Automatic Control of the Main Vehicular Traffic Streams in an Urban Area

The aim of this paper is to point out that the same basic ideas that have appeared useful for data network systems could also be useful in solving street traffic control problems

Optimization Applied to Transportation Systems

This volume summarizes the results of the first Workshop initiated by the Working Group on Transportation, which was established by the Systems Engineering Committee (SECOM) of the International Federation of Automatic Control (IFAC). Three levels of transportation systems analysis are utilized as a framework: -- Transportation systems planning from a socio-economic point of view; -- Operational planning, mainly focusing on routing and scheduling problems; and, -- Control and guidance of transportation systems. Formal presentations dealing with the state-of-the-art of transportation systems and selected specific topics are included in the proceedings, as well as summaries of panel discussions which followed the individual sessions