Are Conversations With Your Car Distracting? Understanding the Promises and Pitfalls of Speech-Based Interfaces 2000-01-C012
As computer applications for cars emerge, speech-based interfaces provide an obvious alternative to the visually demanding graphical user interfaces common on desktop applications. However, speech-based interfaces may pose cognitive demands that could undermine driving safety. This study uses a car-following task to evaluate how a speech-based e-mail system affects drivers' response to a periodically braking lead vehicle. A baseline condition with no e-mail system was compared to a simple and a complex e-mail system in both simple and complex driving environments. The results show a 30% (310 msec) increase in reaction time when the speech-based system is present. These results suggest several design strategies to mitigate the distraction potential of speech-based systems.
John D. Lee, Brent Caven, Steven Haake, Timothy L. Brown
University of Iowa, University Of Iowa
Convergence 2000 International Congress on Transportation Electronics
Passenger Safety and Convenience Systems-PT-83