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Development of Traffic Stream Models for a Two lane NH in Kottayam


Author(s):

Parvathy V. , RAJIV GANDHI INSTITUTE OF TECHNOLOGY, KOTTAYAM; Ajitha T, RAJIV GANDHI INSTITUTE OF TECHNOLOGY, KOTTAYAM

Keywords:

Empirical models, Heterogeneous traf?c conditions, Theoretical models, Traffic simulation, Traf?c stream modeling

Abstract:

Traffic stream models provide relationships among the three basic traffic variables namely speed, flow and density under steady-state conditions. Stream modeling is important as stream models are the foundation for traffic flow modeling and for planning, design and effective management of road systems. Since reported stream models are mainly developed for homogeneous traffic conditions, they may not be directly suitable for the Indian traffic condition which is heterogeneous, characterized by a wide mix of vehicles having diverse static and dynamic characteristics. Another feature of this traffic is the absence of lane discipline and lane marking. The lane widths are also not constant. In this respect, only very limited studies have been reported from India. In the present study an optimal speed – density relation is developed empirically using the speed and density data simulated through the calibrated VISSIM model. The optimal flow-density and speed-flow relationships are obtained after attempting both empirical models and theoretical models that are suitable for the study stretch under consideration. The results indicate that the developed models are able to represent the steady-state macroscopic behavior of the heterogeneous traffic stream with reasonable accuracy.


Other Details:

Manuscript Id :IJSTEV4I2002
Published in :Volume : 4, Issue : 2
Publication Date: 01/09/2017
Page(s): 104-108
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