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Evaluation of Impacts of Adaptive Cruise Control on Mixed Traffic Flow

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Author Info
Xi Zou
David Levinson () (Nexus (Networks, Economics, and Urban Systems) Research Group, Department of Civil Engineering, University of Minnesota)

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Abstract

This paper addresses the impacts of Adaptive (Intelligent) Cruise Control (ACC) laws on traffic flow. Semi-automated vehicles, such as ACC Vehicles, with the capability to automatically follow each other in the same lane, will coexist with manually driven vehicles on the existing roadway system before they become universal. This mixed fleet scenario creates new capacity and safety issues. In this paper, simulation results of various mixed fleet scenarios under different ACC laws are presented. Explicit comparison of two ACC laws, Constant Time Headway (CTH) and Variable Time Headway (VTH), are based on these results. It©ös found that the latter one has better performance in terms of capacity and stability of traffic. Throughput increases with the proportion of CTH vehicles when flow is below capacity conditions. But above capacity, speed variability increases and speed drops with the CTH traffic compared with manual traffic, while the VTH traffic always performs better.

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File URL: http://nexus.umn.edu/Papers/ACC.pdf
File Format: application/pdf
File Function: First version, 2007
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Publisher Info
Paper provided by University of Minnesota: Nexus Research Group in its series Working Papers with number 200207.

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Date of creation: 2006
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Publication status: Published in Proceedings of International Conference on Traffic and Transportation Studies p. 762-779, held in Guilin, China July 2002, ASCE Washington DC.
Handle: RePEc:nex:wpaper:acc

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Postal: Dept. of Civil Engineering, 500 Pillsbury Drive SE, Minneapolis, MN 55455
Phone: +01 (612) 625-6354
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Web page: http://nexus.umn.edu
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Related research
Keywords: Adaptive Cruise Control

Find related papers by JEL classification:
R40 - Urban, Rural, and Regional Economics - - Transportation Systems - - - General

This paper has been announced in the following NEP Reports:

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This page was last updated on 2008-7-10.

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