Driver Distraction with Wireless Telecommunications and Route Guidance Systems
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2000-07-01
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Abstract:Concerns have been raised in recent years about the distraction potential of Intelligent Transportation Systems (ITS) technologies including driver
information systems such as route navigation systems. The research described in this report had the following objectives: 1) characterize the impact
of route guidance system destination entry use on vehicle control and driver eye glance behavior on a test track; 2) assess the influence of individual
differences, as indexed by a battery of cognitive tests, on the susceptibility to distraction as indicated by disruption in vehicle control and driver
eye glance behavior during destination entry and cellular telephone use while driving; and 3) examine the validity of a proposed SAE recommended
practice, known as the 15-second rule, according to which if a given route guidance destination entry function can be completed in 15 seconds or
less by a sample of drivers without concurrent driving, then that function may be accessible while the vehicle is in motion.
Results for this research suggest voice recognition technology is a viable alternative to visual-manual destination entry while driving and that
destination entry with visual-manual methods is ill-advised while driving. The assessment of the impact of individual differences on the
susceptibility to distraction during destination entry and cellular telephone use while driving showed low but consistent patterns of correlation to
test track performance measures. The results of this preliminary assessment of the 15-second rule suggest that, when applied to a variety of tasks,
the rule has diagnostic sensitivity not much better than chance guessing. The 15-second rule works well for disallowing the most egregiously
distracting tasks, e.g., manual destination entry while driving. These preliminary findings, together with the observation that the 15-second rule
is, in itself, not diagnostic with regard to the locus of a driver distraction effects, suggest that opportunities for improvement should be pursued.
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