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Advances in Human-Computer Interaction
Volume 2012, Article ID 787469, 12 pages
http://dx.doi.org/10.1155/2012/787469
Research Article

Haptic Addition to a Visual Menu Selection Interface Controlled by an In-Vehicle Rotary Device

Division of Human Work Science, Department of Business Administration, Technology and Social Sciences, Luleå University of Technology, 97187 Luleå, Sweden

Received 4 July 2011; Accepted 21 October 2011

Academic Editor: Ian Oakley

Copyright © 2012 Camilla Grane and Peter Bengtsson. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Today, several vehicles are equipped with a visual display combined with a haptic rotary device for handling in-vehicle information system tasks while driving. This experimental study investigates whether a haptic addition to a visual interface interferes with or supports secondary task performance and whether haptic information could be used without taking eyes off road. Four interfaces were compared during simulated driving: visual only, partly corresponding visual-haptic, fully corresponding visual-haptic, and haptic only. Secondary task performance and subjective mental workload were measured. Additionally, the participants were interviewed. It was found that some haptic support improved performance. However, when more haptic information was used, the results diverged in terms of task completion time and interface comprehension. Some participants did not sense all haptics provided, some did not comprehend the correspondence between the haptic and visual interfaces, and some did. Interestingly, the participants managed to complete the tasks when using haptic-only information.