Some findings and an overview on vehicular flow characteristics.

Author(s)
Koshi, M. Iwasaki, M. & Ohkura, I.
Year
Abstract

This paper deals with vehicular flow characteristics, especially in a congested area, from a macroscopic and microscopic point of view. Data on traffic flow have been collected on Tokyo expressways by means of vehicle detectors, cine cameras and aerial photography. Car-following spacings were measured by means of a test car method and roadside cine cameras on Tokyo expressways. A car-following experiment involving 29 cars was conducted on a test track. Various features of vehicle flow were highlighted such as oscillation characteristics in the congested area and discrepancy in traffic flow density. Speed-spacing relationships were shown to exist between free flow and congested flow areas. A qualitative hypothesis is presented to explain why and how oscillations are generated. For the covering abstract of the symposium see IRRD 284351.

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Publication

Library number
B 14649 [electronic version only] /71 / IRRD 284339
Source

In: Proceedings of the Eighth International Symposium on Transportation and Traffic Theory, Toronto, Canada, June 24-26 1981, p. 403-426, 12 ref.

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.