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Alcohol impairs driver attention and prevents compensatory strategies
Swedish National Road and Transport Research Institute, Traffic and road users, The Human in the Transport system.. Linköpings universitet.ORCID iD: 0000-0003-4134-0303
SmartEye AB, Sverige.
SmartEye AB, Sverige.ORCID iD: 0000-0002-1931-2448
Swedish National Road and Transport Research Institute, Traffic and road users, The Human in the Transport system..ORCID iD: 0000-0002-1849-9722
2023 (English)In: Accident Analysis and Prevention, ISSN 0001-4575, E-ISSN 1879-2057, Vol. 184, article id 107010Article in journal (Refereed) Published
Abstract [en]

While the negative effects of alcohol on driving performance are undisputed, it is unclear how driver attention, eye movements and visual information sampling are affected by alcohol consumption. A simulator study with 35 participants was conducted to investigate whether and how a driver's level of attention is related to self-paced non-driving related task (NDRT)-engagement and tactical aspects of undesirable driver behaviour under increasing levels of breath alcohol concentration (BrAC) up to 1.0 ‰. Increasing BrAC levels lead to more frequent speeding, short time headways and weaving, and higher NDRT engagement. Instantaneous distraction events become more frequent, with more and longer glances to the NDRT, and a general decline in visual attention to the forward roadway. With alcohol, the compensatory behaviour that is typically seen when drivers engage in NDRTs did not appear. These findings support the theory that alcohol reduces the ability to shift attention between multiple tasks. To conclude, the independent reduction in safety margins in combination with impaired attention and an increased willingness to engage in NDRTs is likely the reason behind increased crash risk when driving under the influence of alcohol. © 2023

Place, publisher, year, edition, pages
Elsevier, 2023. Vol. 184, article id 107010
Keywords [en]
Alcohol, Attention, Distraction, Driving, Eye tracking, Impairment, Automobile drivers, Behavioral research, Eye movements, Alcohol concentrations, Compensatory strategy, Driver attention, Driving performance, Eye-tracking, Visual information
National Category
Applied Psychology
Identifiers
URN: urn:nbn:se:vti:diva-19567DOI: 10.1016/j.aap.2023.107010ISI: 000945900600001Scopus ID: 2-s2.0-85148333510OAI: oai:DiVA.org:vti-19567DiVA, id: diva2:1740640
Funder
Vinnova, 2019-05834Available from: 2023-03-01 Created: 2023-03-01 Last updated: 2023-05-23Bibliographically approved

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Ahlström, ChristerKircher, Katja

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