Print Email Facebook Twitter Car-following under non-congested and congested conditions Title Car-following under non-congested and congested conditions Author Dijker, T. Bovy, P.H.L. Vermijs, R.G.M.M. Faculty Civil Engineering and Geosciences Department Transport and Planning Date 1997-10-31 Abstract In traffic flow analysis several regimes are distinguished, such as congested and non-congested 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 non-congested 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 non-congested flow 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 micro simulation model (FOSIM) 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. Subject traffic engineeringtraffic flow theorytransportation management To reference this document use: http://resolver.tudelft.nl/uuid:ca26fa79-b6ce-49c3-b15e-a6574d9263b0 Publisher Delft University of Technology, Faculty Civil Engineering and Geosciences ISSN 0920-0592 Source LVV rapport, VK 2206.301 Part of collection Institutional Repository Document type report Rights (c) 1997 The Author(s)Delft University of Technology, Civil Engineering and Geosciences Files PDF Rapp_CT_VK_97-07.PDF 57.64 MB Close viewer /islandora/object/uuid:ca26fa79-b6ce-49c3-b15e-a6574d9263b0/datastream/OBJ/view