A pre-drive ocular assessment predicts alertness and driving impairment

A naturalistic driving study in shift workers

Megan D. Mulhall, Jennifer Cori, Tracey L. Sletten, Jonny Kuo, Michael G. Lenné, Michelle Magee, Marie-Antoinette Spina, Allison Collins, Clare Anderson, Shantha M.W. Rajaratnam, Mark E. Howard

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Sleepiness is a major contributor to motor vehicle crashes and shift workers are particularly vulnerable. There is currently no validated objective field-based measure of sleep-related impairment prior to driving. Ocular parameters are promising markers of continuous driver alertness in laboratory and track studies, however their ability to determine fitness-to-drive in naturalistic driving is unknown. This study assessed the efficacy of a pre-drive ocular assessment for predicting sleep-related impairment in naturalistic driving, in rotating shift workers. Fifteen healthcare workers drove an instrumented vehicle for 2 weeks, while working a combination of day, evening and night shifts. The vehicle monitored lane departures and behavioural microsleeps (blinks >500 ms) during the drive. Immediately prior to driving, ocular parameters were assessed with a 4-min test. Lane departures and behavioural microsleeps occurred on 17.5 % and 10 % of drives that had pre-drive assessments, respectively. Pre-drive blink duration significantly predicted behavioural microsleeps and showed promise for predicting lane departures (AUC = 0.79 and 0.74). Pre-drive percentage of time with eyes closed had high accuracy for predicting lane departures and behavioural microsleeps (AUC = 0.73 and 0.96), although was not statistically significant. Pre-drive psychomotor vigilance task variables were not statistically significant predictors of lane departures. Self-reported sleep-related and hazardous driving events were significantly predicted by mean blink duration (AUC = 0.65 and 0.69). Measurement of ocular parameters pre-drive predict drowsy driving during naturalistic driving, demonstrating potential for fitness-to-drive assessment in operational environments.

Original languageEnglish
Article number105386
Number of pages10
JournalAccident Analysis and Prevention
Volume135
DOIs
Publication statusPublished - Feb 2020

Keywords

  • Driving impairment
  • Drowsy driving
  • Fatigue
  • Ocular measures
  • Predicting performance

Cite this

Mulhall, Megan D. ; Cori, Jennifer ; Sletten, Tracey L. ; Kuo, Jonny ; Lenné, Michael G. ; Magee, Michelle ; Spina, Marie-Antoinette ; Collins, Allison ; Anderson, Clare ; Rajaratnam, Shantha M.W. ; Howard, Mark E. / A pre-drive ocular assessment predicts alertness and driving impairment : A naturalistic driving study in shift workers. In: Accident Analysis and Prevention. 2020 ; Vol. 135.
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A pre-drive ocular assessment predicts alertness and driving impairment : A naturalistic driving study in shift workers. / Mulhall, Megan D.; Cori, Jennifer; Sletten, Tracey L.; Kuo, Jonny; Lenné, Michael G.; Magee, Michelle; Spina, Marie-Antoinette; Collins, Allison; Anderson, Clare; Rajaratnam, Shantha M.W.; Howard, Mark E.

In: Accident Analysis and Prevention, Vol. 135, 105386, 02.2020.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Sletten, Tracey L.

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AU - Lenné, Michael G.

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AU - Spina, Marie-Antoinette

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