Effective patterns of sleep warnings based on the physiologic and behavioural reaction of users

This paper presents a study of the efficacy of different types of sleep warnings sequences over heart rate, lane keeping, and the subjective opinion of the user. We used a fixed-base driving simulator and a multimodal sleep warning system with four types of signals: visual, acoustic, speech, and vibrotactile. These signals were differently combined, in order to create two sequences of different intensities. 14 drivers in different sleep conditions (normal, poor sleep and deprived of sleep for more than 20 hours) participated in the experiment. Heart rate variability and standard deviation of lane position decreased just after triggering the warning. This was a positive effect of the warning, which was more marked as the events were repeated on, when their intensity increased over time, and for the group of participants that had been deprived of sleep. These results contribute in learning the best way of counteracting sleepiness at the wheel.


  • English

Media Info

  • Pagination: 49-58
  • Monograph Title: Proceedings of European Conference on Human Centred Design for Intelligent Transport Systems, April 29-30, 2010, Berlin, Germany

Subject/Index Terms

Filing Info

  • Accession Number: 01382634
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 9782953171211
  • Files: ATRI
  • Created Date: Aug 22 2012 1:25PM