Effects of Environmental Factors on Naturalistic Driving in Obstructive Sleep Apnea

Lixi Yu; Jeffrey D Dawson; Nazan S Aksan; Jon Tippin; Matthew Rizzo

doi:10.17077/drivingassessment.1481

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Effects of Environmental Factors on Naturalistic Driving in Obstructive Sleep Apnea

Conference proceeding

Open access

Effects of Environmental Factors on Naturalistic Driving in Obstructive Sleep Apnea

Lixi Yu, Jeffrey D Dawson, Nazan S Aksan, Jon Tippin and Matthew Rizzo

Proceedings of the 7th International Driving Symposium on Human Factors in Driver Assessment, Training, and Vehicle Design, Vol.7, pp.142-148

06/18/2013

DOI: 10.17077/drivingassessment.1481

PMCID: PMC4217221

PMID: 25374964

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Abstract

Reduced visibility and other environmental factors can impair driver ability to respond to roadway hazards. We examined the effects of reduced visibility on naturalistic driving in 66 drivers, including 45 at-risk drivers with obstructive sleep apnea (OSA) and 21 controls. We analyzed three months of electronic data using “black box” recorder technology and assessed the extent to which driver speed, longitudinal acceleration, and lateral acceleration metrics depend on ambient visibility from web-based environmental data archives. We calculated summary driving metrics within 10-second intervals, and reduced these to within-subject means and tested for associations of interest. OSA drivers did not differ from controls with respect to electronic measures or visibility conditions in which they drove. On average, drivers drove slower when visibility was reduced. After controlling for speed, variations in lateral and longitudinal acceleration were positively associated with high-visibility conditions. These findings suggest that drivers exert greater vehicular control when visibility is limited, and that this association is not just due to slower speeds. Weaker relationships between visibility and driving measures in OSA suggest reduced adaptive strategies. Our methods provide a framework for analyzing the effects of other environmental factors on driving, and we provide an additional example using wind speed.

Details

Title: Subtitle: Effects of Environmental Factors on Naturalistic Driving in Obstructive Sleep Apnea
Creators: Lixi Yu - Dept. of Biostatistics, Univ. of Iowa College of Public Health, Iowa City, Iowa, USA Dept. of Neurology, Univ. of Iowa Carver College of Medicine, Iowa City, Iowa, USA
Jeffrey D Dawson - Dept. of Biostatistics, Univ. of Iowa College of Public Health, Iowa City, Iowa, USA Dept. of Neurology, Univ. of Iowa Carver College of Medicine, Iowa City, Iowa, USA
Nazan S Aksan - Dept. of Biostatistics, Univ. of Iowa College of Public Health, Iowa City, Iowa, USA Dept. of Neurology, Univ. of Iowa Carver College of Medicine, Iowa City, Iowa, USA
Jon Tippin - Dept. of Biostatistics, Univ. of Iowa College of Public Health, Iowa City, Iowa, USA Dept. of Neurology, Univ. of Iowa Carver College of Medicine, Iowa City, Iowa, USA
Matthew Rizzo - Dept. of Biostatistics, Univ. of Iowa College of Public Health, Iowa City, Iowa, USA Dept. of Neurology, Univ. of Iowa Carver College of Medicine, Iowa City, Iowa, USA
Resource Type: Conference proceeding
Publication Details: Proceedings of the 7th International Driving Symposium on Human Factors in Driver Assessment, Training, and Vehicle Design, Vol.7, pp.142-148
DOI: 10.17077/drivingassessment.1481
PMID: 25374964
PMCID: PMC4217221
Publisher: University of Iowa; Iowa City, Iowa, USA
Language: English
Date published: 06/18/2013
Academic Unit: Neurology; Public Health Administration; Biostatistics
Record Identifier: 9984214690002771

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