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This paper discusses the values that Adaptive Cruise Control (ACC) systems can provide to the consumer now and in the future. It contains results from research applicable to understanding ACC behavior in traffic streams. The paper includes findings on (1) non-intrusive means for characterizing ACC behavior, (2) the influence of ACC behavior on the microscopic properties of traffic flow, and (3) prospects for the use of ACC systems to relieve driver frustration in heavy traffic as well as contributing to smoother traffic flow.

The results from this field operational test (FOT) show differences in the longitudinal control of headway between manual driving and driving with an adaptive cruise control (ACC) system. Based on measurements made during naturalistic driving by laypersons, it is found that the ACC mode of driver assistance contributes to longer following distances and is perceived to improve driver comfort and convenience. Observations on desirable improvements for ACC systems are presented.