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Capacity drops at merges: An endogenous model

Authors :
Leclercq, Ludovic
Laval, Jorge A.
Chiabaut, Nicolas
Source :
Transportation Research Part B: Methodological. Nov2011, Vol. 45 Issue 9, p1302-1313. 12p.
Publication Year :
2011

Abstract

Abstract: The Newell–Daganzo merge model is not only very simple but also accurately reproduces experimental findings. However, the capacity downstream of the merge is an exogenous variable in the model. This is a serious limitation for merges that behave as active bottlenecks because their downstream capacity is a direct consequence of the merging behavior. This paper proposes an analytical model that extends the Newell–Daganzo model by incorporating, endogenously, the capacity drop related to the merging process. Two cases are investigated depending on the traffic states on the on-ramp. The model properties are analyzed and a sensitivity analysis is performed to quantify the relative contribution of the each parameter in the capacity drop. Finally, the extended Newell–Daganzo model is validated with experimental data coming from an active merge bottleneck on the M6 freeway in UK. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
01912615
Volume :
45
Issue :
9
Database :
Academic Search Index
Journal :
Transportation Research Part B: Methodological
Publication Type :
Academic Journal
Accession number :
66853662
Full Text :
https://doi.org/10.1016/j.trb.2011.05.007