A HIGH-FLOW TRAFFIC-COUNTING DISTRIBUTION
ALTHOUGH MANY OBSERVATIONS HAVE BEEN MADE ON INTERVEHICLE HEADWAYS AND TRAFFIC VOLUMES, IT IS IMPORTANT TO IMPROVE THE THEORETICAL BASES FOR PREDICTING A NUMBER OF FLOW AND DENSITY CHARACTERISTICS FROM A LIMITED NUMBER OF OBSERVATIONS. WHEREAS CONSIDERABLE ATTENTION HAS BEEN GIVEN TO THE THEORETICAL AND EXPERIMENTAL EVALUATION OF THE STATISTICAL DISTRIBUTIONS OF INTERVEHICLE SPACINGS, THERE HAS BEEN MUCH LESS INFORMATION AVAILABLE ABOUT THE DISCRETE COUNTING DISTRIBUTIONS. THE PRINCIPAL EFFORT HAS BEEN DEVOTED TO POISSON-LIKE COUNTING DISTRIBUTIONS. THE PURPOSE OF THIS PAPER IS TO REVIEW AND PRESENT COUNTING DISTRIBUTIONS WHICH TAKE INTO ACCOUNT TWO FUNDAMENTAL CHARACTERISTICS OF MEDIUM-AND HIGH-DENSITY TRAFFIC FLOWS: (1) PLATOONING OR BUNCHING, AND (2) MINIMUM SPACING, JAM- DENSITY OF THE SO-CALLED MAXIMUM-PACK SITUATIONS. THESE COUNTING DISTRIBUTIONS ARE DERIVED FROM INTERVEHICLE SPACING DISTRIBUTIONS, WHICH HAVE BEEN STUDIED BOTH THEORETICALLY AND EXPERIMENTALLY. IN THE LOW-DENSITY OR LOW-FLOW CASE IT IS SHOWN THAT THESE DISTRIBUTIONS HAVE THE LIMITS OF THE WELL-KNOWN POISSON CASE. /AUTHOR/
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Supplemental Notes:
- Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Authors:
- Oliver, Robert M
- Thibault, Bernard
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Conference:
- 41st Annual Meeting of the Highway Research Board
- Location: Washington DC, United States
- Date: 1962-1-8 to 1962-1-12
- Publication Date: 1962
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: pp 15-27
- Monograph Title: Theory of traffic flow
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Serial:
- Highway Research Board Bulletin
- Issue Number: 356
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Bunching; Headways; Measurement; Physical distribution; Poisson ratio; Traffic counting; Traffic density; Traffic flow; Traffic volume
- Old TRIS Terms: Bunching (Vehicles); Poissons ratio
- Subject Areas: Freight Transportation; Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 00227069
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Aug 13 2004 6:56PM