Evaluation of Impacts of Adaptive Cruise Control on Mixed Traffic Flow

Proceedings of International Conference on Traffic and Transportation Studies, pp. 762-779, July 2002

8 Pages Posted: 27 Jan 2011

See all articles by Xi Zou

Xi Zou

affiliation not provided to SSRN

David Matthew Levinson

affiliation not provided to SSRN

Date Written: 2002

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.

Keywords: adaptive cruise control, vehicles, automation, time headway

JEL Classification: R40, R41

Suggested Citation

Zou, Xi and Levinson, David Matthew, Evaluation of Impacts of Adaptive Cruise Control on Mixed Traffic Flow (2002). Proceedings of International Conference on Traffic and Transportation Studies, pp. 762-779, July 2002. Available at SSRN: https://ssrn.com/abstract=1748615

Xi Zou

affiliation not provided to SSRN ( email )

David Matthew Levinson (Contact Author)

affiliation not provided to SSRN

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