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A microscopic analysis of speed deviation impacts on lane-changing behavior
Authors:F Golbabaei  F Moghadas Nejad  AR Noory
Institution:1. Department of Transportation Engineering, Engineering Faculty, Sciences &2. Research Branch, Hesarak, Tehran 1477893855, IranF.golbabaie@yahoo.com;4. Faculty of Civil Engineering, Amirkabir University of Technology, 424, Hafez Ave., Tehran 15914, Iran
Abstract:Driving behavior models that capture drivers’ tactical maneuvering decisions in different traffic conditions are essential to microscopic traffic simulation systems. This paper focuses on a parameter that has a great impact on road users’ aggressive overtaking maneuvers and directly affects lane-changing models (an integral part of microscopic traffic simulation models), namely, speed deviation. The objective of this research is to investigate the impacts of speed deviation in terms of performance measures (delay time, network mean speed, and travel time duration) and the number of lane-change maneuvers using the Aimsun traffic simulator. Following calibration of the model for a section of urban highway in Tehran, this paper explores the sensitivity of lane-changing maneuvers during different speed deviations by conducting two types of test. Simulation results show that, by decreasing speed deviation, the number of lane changes reduces remarkably and so network safety increases, thus reducing travel time due to an increase in network mean speed.
Keywords:microsimulation  lane-changing behavior  speed deviation  network parameters  Aimsun
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