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Contents
1.
Introduction......................................................................................................................3
1.1 You Talk (and Drive), It Types.............................................................................3
1.2 Connectivity, At a Price........................................................................................3
1.3 Driver Distraction Concerns .................................................................................4
2.
The Text Entry Task and Driver Distraction ...................................................................4
2.1 Visual Distraction .................................................................................................4
2.2 Cognitive Distraction ............................................................................................5
2.3 Inherent Cognitive Load .......................................................................................6
3.
User-Centered Design and In-Car Dictation....................................................................6
3.1 Needs and Desires.................................................................................................6
3.2 Needs and Capabilities..........................................................................................7
3.3 Considering the System’s Capabilities .................................................................7
4.
Dictation Design Challenges............................................................................................8
4.1 The Detection Problem .........................................................................................9
4.2 The Correction Problem........................................................................................9
5.
Design Recommendations .............................................................................................10
5.1 Introduction.........................................................................................................10
5.2 General VUI “Cornerstones” ..............................................................................11
5.3 The Dictation VUI ..............................................................................................14
5.4 Dialog Pacing......................................................................................................16
5.5 The Desirability of Correction Mode..................................................................17
5.6 Implementing Correction Mode..........................................................................17
6.
Additional Details and Conclusion ................................................................................23
6.1 Deployment Considerations................................................................................23
6.2 Conclusion ..........................................................................................................25
References.............................................................................................................................26
Enabling Safe and Usable In-Vehicle Messaging
2
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