Abstract
In this report, the authors examine the applicability of haptic displays for rear-end collision avoidance warnings. Concepts and published research studies are reviewed in the report. This is followed by three small-scale studies of mono-pulse braking and active steering displays. Two parameter setting studies are first discussed. The first examined the display parameter settings of a mono-pulse braking display, while the second examined the effects of active steering vibration amplitude frequency, and duration on display detectability and appropriateness ratings. Based on the results obtained, the authors suggest that active steering displays be reserved for future collision avoidance system integration. In the third study, the authors examined the response of drivers in a car following situation to a mono-pulse braking display under two different simulated rear-end collision avoidance warning scenarios. Results suggest that mono-pulse braking displays might be of use in rear-end collision avoidance applications.
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