A validation study of a PC-based test of safety aspects of in-vehicle information systems

a test of an auditory message version of a RDS-TMC task. Under assignment by SWOV Institute for Road Safety Research and commissioned by the Dutch Ministry of Transport, Public Works and Water Management, Directorate-General of Public Works and Water Management, Transport Research Centre AVV.
Author(s)
Brookhuis, K.A. & Waard, D. de
Year
Abstract

A standard PC-based test was developed to enable evaluation of effects of in-vehicle information systems IVISs) on aspects of driver behaviour in so far as relevant for traffic safety. A first validation of the test is described for an auditory version of Radio Data System - Traffic Message Channel (RDS-TMC). The test resembles driving a car in a limited number of relevant aspects: the subjects are required to drive on a simulated winding road while using a steering wheel, an accelerator, and a brake pedal. During a part of the driving task, subjects are required to listen closely and respond to a few auditory messages. The most important indicators of driving performance used are longitudinal control: vehicle speed, and lateral control, namely standard deviation (SD) of lateral position, minimum Time-to-Line Crossing (TLC) and actual lane boundary crossings. The results show no effects of the auditory task on driver behaviour as measured by adopted speed and minimum TLC. Interaction with the secondary task that induces an auditory load resulted in a difference of the minimumTLC between forced and self-paced speed conditions only. The interaction with the IVIS application resulted in smaller SDs of lateral position. Subjects indicated higher mental workload while engaged in the secondary task, and also, rated the self-paced condition as needing more effort. See also IRRD E201349 and E201355.

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Publication

Library number
C 12970 [electronic version only] /91 /83 / IRRD E201403
Source

Haren, University of Groningen RUG, Centre for Environmental and Traffic Psychology COV, 1997, 24 p., 26 ref.; COV 97-06 - ISBN 90-6807-340-0

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.