Generally speaking, traffic headway comprises distance headway and time headway, which varies according to velocity and acceleration. Distance headway is a part of the traffic follow model as an expression of the stimulus-response factor. A more responsive driver accelerates and decelerates more frequently in response to the vehicle in front, thereby reducing the capacity of the traffic lane. This study attempts to calculate the distance headway in both the Macro Traffic Model and the Micro Traffic Model, and thus determine a steady state for the distance headway. The research results show that the Macro Traffic Model reaches Steady State at 20-23 seconds and the Micro Traffic Model reaches Steady State at 19-23 seconds. This research can be applied to traffic planning, calculation of crossroad traffic saturation rates, or in traffic simulation applications.
A Study of Steady State for Distance Headway
Ninth Asia Pacific Transportation Development Conference ; 2012 ; Chongqing, China
Sustainable Transportation Systems ; 380-386
2012-06-28
Conference paper
Electronic Resource
English
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