SWOV Catalogus

125505

Driver Distraction: A Naturalistic Observation of Secondary Behaviors with the Use of Driver Assistance Systems.
C 46854 (In: C 46824 [electronic version only]) /83 / ITRD E848617
Sayer, J.R. Mefford, M.L. Shirkey, K. & Lantz, J.
In: Driving Assessment 2005 : proceedings of the third international driving symposium on human factors in driver assessment, training and vehicle design, held Rockport, Maine, USA, June 27-30, 2005, 7 p.

Samenvatting This report describes the naturalistic observation of secondary behaviorsperformed by 66 drivers who took part in the Automotive Collision Avoidance System Field Operational Test (ACAS FOT). The ACAS FOT included two driver assistance systems, adaptive cruise control (ACC) and forward collision warning (FCW). Each driver participated in both baseline (no driver assistance systems for one week) and treatment conditions (both ACC and FCW available for 3 weeks). The method employed was to sub-sample video data, and code drivers' secondary behaviors using 4 s video clips of the driver, collected every 5 minutes. Eight-hundred and ninety video clips were reviewed and coded while participants drove manually, with conventional cruise control, ACC, and FCW. The results show that drivers who took part in the field test were no more likely to engage in secondary behaviors when driving with ACC and FCW in comparison to manual control. When the driver assistance systems became available to the participants, there was an increase in the number of conversations drivers had with passengers, probably related to the driver explaining the novel ACAS system to passengers. The results have important implications in that, at least for the duration of exposure examined, they counter the concern often raised that driver assistance systems will promote driver distraction, lapses in attention or modification in perceived risk.
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