Auditory forward collision warnings reduce crashes associated with task-induced fatigue in young and older drivers Online publication date: Wed, 18-Mar-2015
by Carryl L. Baldwin; Jennifer F. May; Raja Parasuraman
International Journal of Human Factors and Ergonomics (IJHFE), Vol. 3, No. 2, 2014
Abstract: Driver fatigue poses a persistent threat to transportation safety. Auditory warnings provided prior to a potential collision event can reduce crash probability in alert drivers, but it is unclear whether they are effective in fatigued young and older drivers. In the present study fatigue was task-induced in young (18-29 yrs.) and older (65-85 yrs.) licensed drivers via a 1.5 hour simulated car following task. Upon meeting a fatigue criterion - based on individually assessed excessive lane position variability - a single potential collision event was triggered and drivers were either provided an auditory warning or not. The auditory warning significantly reduced overall crash probability and was particularly beneficial in reducing crashes in older drivers. Auditory collisions warnings can reduce fatigue-related rear-end crashes, particularly among older drivers - a population at greater risk of both fatigue and crashes.
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