Evaluation of impacts of adaptive cruise control on mixed traffic flow

Xi Zou, David M Levinson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

This paper addresses the impacts of Adaptive (Intelligent) Cruise Control (ACC) laws on the 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 is 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.

Original languageEnglish (US)
Title of host publicationProceedings of the Conference on Traffic and Transportation Studies, ICTTS
PagesX762-769
DOIs
StatePublished - Dec 1 2002
Event3rd International Conference on Traffic and Transportation Studies, ICTTS 2002 - Guilin, China
Duration: Jul 23 2002Jul 25 2002

Publication series

NameProceedings of the Conference on Traffic and Transportation Studies, ICTTS

Other

Other3rd International Conference on Traffic and Transportation Studies, ICTTS 2002
CountryChina
CityGuilin
Period7/23/027/25/02

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