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Glancing At PNDs can Influence Driving

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Talk given at Automotive UI 2009, Essen, Germany, September 22, 2009.

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Glancing At PNDs can Influence Driving

  1. 1. Glancing at Personal Navigation Devices can Influence Driving<br />Andrew Kun, Tim Paek,Zeljko Medenica, Nemanja Memarovic, Oskar Palinko<br />
  2. 2. Outline<br />Navigation study: experiment<br />Results<br />Conclusion<br />
  3. 3. Navigation study<br />With vs. without map:<br />Time looking at the road?<br />Effect on driving performance?<br />Voice instructionfor both<br />8 male subjects <br />
  4. 4. DriveSafety driving simulator<br /><ul><li>tinyurl.com/p54sim</li></li></ul><li>Driving simulator<br />
  5. 5. 2<br />Driving scenario<br />1<br />2<br />3<br />3<br />1<br />
  6. 6. Seeingmachines eye tracker<br />tinyurl.com/eyetracker<br />
  7. 7. Visual attention<br />Fixations (&gt; 100 ms): number, timing, etc.<br />Percent dwell time: looking at road<br />
  8. 8. Driving performance<br />Variance:<br />Lane position<br />Steering wheel angle<br />Velocity<br />Collisions<br />
  9. 9. Effect of visual attention?<br />Average variances (13 segments)<br />Cross-correlation peaks: PDT decrease -> variance increase? <br />
  10. 10.
  11. 11. Outline<br />Navigation study: experiment<br />Results<br />Conclusion<br />
  12. 12. Camera setup<br />Front camera<br />Eye tracker camera<br />Rear camera<br />
  13. 13. Standard PND<br />
  14. 14. Voice-only PND<br />
  15. 15. Questions<br />Influence on visual attention?<br />If yes, effect on driving performance?<br />
  16. 16. PDT on the outside world<br />
  17. 17. Questions<br />Influence on visual attention?<br />If yes, effect on driving performance?<br />
  18. 18. Cross-correlation<br />
  19. 19. Cross-correlation, gazes &gt; 200 ms<br />
  20. 20. Fixations at standard PND screen<br />
  21. 21. Outline<br />Navigation study: experiment<br />Results<br />Conclusion<br />
  22. 22. Conclusion<br />Display: (visual attention)↘<br />(visual attention)↘ -> (variances↗)<br />(long gazes at PND) -> (variances↗)<br />Display viewing: 60% of gazes last &gt;200ms<br />Collision risk: need testing<br />But…<br />
  23. 23. I prefer to have a PND screen…<br />
  24. 24. Design implications<br />Must earn users’ trust.<br />Complicated displays may reduce visual attention even more.<br />Small screen? Voice-only may be just fine.<br />
  25. 25. Next?<br />“You’re on the right track.”<br />Complex environments?<br />Augmented reality.<br />
  26. 26. Acknowledgements<br />US DOJ (NIJ, COPS)<br />Microsoft Research<br />TellMe<br />

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