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The effects of driving situation on sleepiness indicators after sleep loss: A driving simulator study
Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.ORCID iD: 0000-0002-4790-7094
Stockholm university, Stress research institute.
Swedish National Road and Transport Research Institute, Traffic and road users, Vehicle technology and simulation.
Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics.ORCID iD: 0000-0001-9635-5233
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2009 (English)In: Industrial Health, ISSN 0019-8366, Vol. 47, no 4, 393-401 p.Article in journal (Refereed) Published
Abstract [en]

Almost all studies of sleepy driving are carried out in driving simulators and with monotonous road conditions (no interaction with other cars). The present study investigated indicators of sleepy driving in a more challenging scenario after a night awake. 17 participants drove a high fidelity moving base driving simulator experiment while sleepiness was monitored physiologically and behaviourally. Short periods of situations of free driving (no other vehicles) alternated with short periods of following another vehicle (car following) with and without the possibility to overtake. The result showed that a night of prior sleep loss increased sleepiness levels at the wheel (eye closure duration and lateral variability) compared to after a night of normal sleep. Blink duration while overtaking was significantly lower compared to the other situations, it was at the same level as after night sleep. Speed when passing a stopped school bus was not significantly affected by sleepiness. However the warning caused a more rapid reduction of speed. In conclusion, a moderately challenging driving contest did not affect sleepiness indicators, but a very challenging one did so (overtaking). This suggests that it is important to monitor the driving situation in field operational tests of sleepy driving.

Place, publisher, year, edition, pages
2009. Vol. 47, no 4, 393-401 p.
Keyword [en]
Fatigue, Driver, Driving, Behaviour, Car following, Overtaking, Average speed, Attention, Warning, Steering, Safety, Simulator, Test
National Category
Engineering and Technology
Research subject
Road: Traffic safety and accidents, Road: Road user behaviour
Identifiers
URN: urn:nbn:se:vti:diva-6569DOI: 10.2486/indhealth.47.393PubMedID: 19672013OAI: oai:DiVA.org:vti-6569DiVA: diva2:676068
Available from: 2009-10-12 Created: 2013-12-05 Last updated: 2014-09-16Bibliographically approved

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CiteExportLink to record
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Citation style
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