00933709

Component

https://doi.org/10.3141/1803-01

http://scholar.google.com...lson&publication_year=2002

Warning timing and how drivers with and without forward collision warning (FCW) systems react when distracted at the moment a stationary vehicle is revealed directly ahead were investigated. The study was conducted using the Iowa Driving Simulator (IDS). The IDS was equipped with an FCW system that provided auditory warnings based on two warning criteria. A total of 30 subjects were split across three conditions--a baseline of 10 subjects (no warning display), and two warning conditions (early and late) with 10 subjects each. The two warning conditions differed by the duration of an a priori driver reaction component (1.5 and 1.0 s) in the warning algorithm. Drivers' collision avoidance performance in the two warning conditions was compared with that in the baseline condition. Results indicated that the early warning condition showed significantly shorter accelerator release reaction times, fewer crashes, and less severe crashes than both the baseline condition and the late warning condition. The results indicate that the timing of a warning is important in the design of collision warning systems.

This paper appears in Transportation Research Record No. 1803, Human Performance: Models, Intelligent Vehicle Initiative, Traveler Advisory and Information Systems.

English

p. 1-7

2002

Transportation Research Record

0309077281

Figures (8) ; References (20)

Algorithms; Audible warning devices in vehicles; Crash avoidance systems; Driving simulators; Human subject testing; Reaction time

Warning timing

Highways; Safety and Human Factors; I83: Accidents and the Human Factor

TRIS, TRB, ATRI

Nov 12 2002 12:00AM

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