CAR-FOLLOWING UNDER CONGESTED CONDITIONS: EMPIRICAL FINDINGS
In traffic flow analysis several regimes are distinguished, such as congested and noncongested flow conditions. Indications exist that driving behavior differs by regime and that it may change discontinuously between regimes. In contrast most traffic flow models used today basically assume the same car-following behavior irrespective of the traffic flow regime. It is hypothesized that, because of this deficiency, these models do not always perform satisfactorily. To clarify this issue, differences in car-following between congested and noncongested flow are analyzed with data from two sites on Dutch freeways. It is shown that, at the same speeds, passenger car drivers follow with smaller headways in noncongested than in congested flow. Car-following of truck drivers does not show differences between regimes. Microscopic distance gap-speed models are established for several road-user classes, valid for each of the two flow regimes. To show the improvements resulting from these new microscopic relationships, the latter are implemented in a microscopic simulation model with which macroscopic patterns in traffic flow are modeled. The macroscopic findings produced with the regime-specific car-following rules show a considerable improvement in modeling performance.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/030906516X
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1644, Traffic Flow Theory: Simulation Models, Macroscopic Flow Relationships, and Flow Estimation and Prediction.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Dijker, T
- Bovy, P H L
- Vermijs, RGMM
- Publication Date: 1998
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 20-28
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Serial:
- Transportation Research Record
- Issue Number: 1644
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Automobile drivers; Behavior; Car following; Drivers; Field studies; Headways; Microscopic traffic flow; Simulation; Traffic congestion; Traffic simulation; Truck drivers
- Uncontrolled Terms: Field data
- Geographic Terms: Netherlands
- Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;
Filing Info
- Accession Number: 00757535
- Record Type: Publication
- ISBN: 030906516X
- Files: TRIS, TRB, ATRI
- Created Date: Dec 14 1998 12:00AM