Driving Performance on the Descending Limb of Blood Alcohol Concentration (BAC) in Undergraduate Students: A Pilot Study
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Tremblay-2015-Driving Performance.pdf
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Author(s)
Tremblay, Mathieu
Gallant, François
Lavalliere, Martin
Chiasson, Martine
Silvey, Dustin
Behm, David
Albert, Wayne J.
Johnson, Michel J.
Date Issued
February 2015
Journal
PLoS ONE
Publisher
Public Library of Science
Citation
Tremblay, Mathieu, François Gallant, Martin Lavalliere, Martine Chiasson, Dustin Silvey, David Behm, Wayne J. Albert, and Michel J. Johnson. “Driving Performance on the Descending Limb of Blood Alcohol Concentration (BAC) in Undergraduate Students: A Pilot Study.” Edited by Michael Taffe. PLOS ONE 10, no. 2 (February 27, 2015): e0118348.
Version
Final published version
Abstract
Young drivers are overrepresented in collisions resulting in fatalities. It is not uncommon for young drivers to socially binge drink and decide to drive a vehicle a few hours after consumption. To better understand the risks that may be associated with this behaviour, the present study has examined the effects of a social drinking bout followed by a simulated drive in undergraduate students on the descending limb of their BAC (blood alcohol concentration) curve. Two groups of eight undergraduate students (n = 16) took part in this study. Participants in the alcohol group were assessed before drinking, then at moderate and low BAC as well as 24 hours post-acute consumption. This group consumed an average of 5.3 ± 1.4 (mean ± SD) drinks in an hour in a social context and were then submitted to a driving and a predicted crash risk assessment. The control group was assessed at the same time points without alcohol intake or social context.; at 8 a.m., noon, 3 p.m. and 8 a.m. the next morning. These multiple time points were used to measure any potential learning effects from the assessment tools (i.e. driving simulator and useful field of view test (UFOV)). Diminished driving performance at moderate BAC was observed with no increases in predicted crash risk. Moderate correlations between driving variables were observed. No association exists between driving variables and UFOV variables. The control group improved measures of selective attention after the third asessement. No learning effect was observed from multiple sessions with the driving simulator. Our results show that a moderate BAC, although legal, increases the risky behaviour. Effects of alcohol expectancy could have been displayed by the experimental group. UFOV measures and predicted crash risk categories were not sentitive enough to predict crash risk for young drivers, even when intoxicated.
MIT Department
Massachusetts Institute of Technology. Center for Transportation & Logistics
AgeLab (Massachusetts Institute of Technology)
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DOI of Published Version
https://doi.org/10.1371/journal.pone.0118348
