Measuring Cognitive Distraction in the Automobile III

Measuring Cognitive Distraction in the Automobile IIIPhase III - Cognitive Distraction While Driving

This objective of Phase III was to examine the impact of IVIS (in-vehicle information systems) interactions on the driver’s cognitive workload.  Ten different vehicles from both foreign and domestic manufacturerers, each having IVIS, from model year 2015 were used in the study.

IVIS use results in moderate to high level of cognitive distraction.  Some systems were significantly better than others, although all resulted in some degree of cognitive distraction among the age groups tested:

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Mental Distraction Rankings of Individual Vehicles

The biggest surprise is that residual cognitive workload effects from use were still evident 27 seconds after using the system.  "Hands-free" does not mean "brain-free":

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27 Seconds of Mental Distraction Latency

For in-depth information from the study please see:

Final Report

Fact Sheet


For additional cognitive distraction research please visit: