Study results show that VUI on in-car systems improve driving quality and reduce driver distraction

A recent study completed by University of Braunschweig, Germany compared the driving performance of test drivers controlling phone, navigation and entertainment solutions in cars manually and by voice.

The study revealed that overall a voice user interface reduces the mean deviation by up to 60% compared to a manual user interface and significantly reduces drivers’ reaction time. Study results also showed that manual destination entry and music title selection proved most challenging to the test drivers.

The study consisted of a test group performing defined tasks like placing phone calls, entering destinations or selecting music from an MP3 database both manually and by voice in a simulated driving environment. In each scenario the drivers showed less deviation, less swerving, and shorter reaction time when using the voice interface.

If you are interested in the detailed results of the study please contact Fatima Vital.

2008 In-Car Driver Distraction Study

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