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large touch screens usable while driving. Sonja Rümelin | Andreas Butz. Motivation Related work Concepts Study Results. Recent development: LARGE touch screens. Tesla Model S 2012. Concepts: Large Interactive cockpits. Toyota Fun Vii 2012. Daimler DICE 2012.
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large touch screens usable while driving Sonja Rümelin | Andreas Butz
Motivation Related work Concepts Study Results
Recent development: LARGE touch screens • Tesla Model S 2012
Concepts: Large Interactive cockpits • Toyota Fun Vii 2012 • Daimler DICE 2012 • Opel Monza Concept 2013
Why touch? Harvey et al. (2011), Ergonomics: Touch screens (compared to rotary controllers) provide advantages regarding • visual distraction (less) • interaction time (less) • driving performance (better) • usability (better)
Why NOT touch? No haptic feedback like buttons • Visual attention required! • Decreased interruptability! Noy et al. (2004) • Increased crash risk! Klauer et al. (2006)
So How touch? Bach et al. (2008), CHI : Ecker et al. (2009), AutoUI: Touch (gestures) can enable blind interaction at the expense of interruptability Touch buttons= fast Touch gestures = reduced visual attention
So How touch? El-Glaly et al. (2013), TEI: Haptic elements to enhance touch screens for eyes-free use Pielot et al. (2012), MobileHCI: Make use of existing hardware elements to ease orientation
concept Precondition: Use a large touch screen in the center stack (17´´) Approaches: Make things as large as possible (Fitt‘s law!) Make use of available haptic elements Make use of position-independent controls Goal: Show that large screens can be used while driving!
USE CASE • Music player control • commonly performed task • like Bach et al. (2008), Döring et al. (2011) • Functionality • play/pause • skip song forward/backward • skip playlist forward/backward ID4 SmallTouch
realization • Make things as large as possible (Fitt‘s law!) • Make use of available haptic elements • Make use of position-independent controls SpaceTouch KnobTouch SwipeTouch
Study design • 40 participants, within-subjects design, 90 minutes • comparison to two standard interfaces • driving in fixed-based simulation (car following task) > 3500 tasks performed overall BMW iDrive SmallTouch
results Task completion time: best for SpaceTouch Error rate: overall low, confusion of gesture directions Learnability: SpaceTouch and KnobTouch easiest to learn Complexity: rated low for SpaceTouch and SmallTouch Confidence: best with remote control of iDrive system SpaceTouch KnobTouch BMW iDrive SmallTouch SwipeTouch ? !!!
results Visual distraction: least for SwipeTouch, followed by remote control User experience: High hedonic quality for SwipeTouch and KnobTouch No negative effect of any touch interface on driving performance compared to remote control SpaceTouch KnobTouch BMW iDrive SmallTouch SwipeTouch UX
Direct touch: easy to learn & quick to use & the larger the better (Our) large was not large enough Haptics (knob, border) did help Swipe works without having to look, but design is critical