It is well known that alcohol impairs a person’s judgment and reflexive abilities which is why someone who has been drinking should not be behind a wheel. However, most motorists underestimate exactly how drunk they are and almost always mistakenly believe that they are fit to drive. Not surprisingly, a new study finds that self-monitoring and self-evaluation of drunkenness may not help prevent accidents involving drunk motorists.
The study was conducted in Germany which has a legal blood alcohol concentration limit of 0.05. The researchers found in their study that more than 50% of the participants believed that they were fit to drive even though they had a blood alcohol concentration limit that was higher than the maximum legal limit. There were ninety participants in the study, and the average age of the participants was 24. As part of the study, the participants were made to drink alcoholic beverages until their blood alcohol concentration level reached 0.11% or more than twice the legal limit in that country. The study was conducted over a period of two days.
The researchers found that as many as 39% of the participants believed that they had just reached the intoxication limit when they had crossed the limit. On the second day, 53% of the participants believed that they had just reached the legal limit when they had actually surpassed it. This shows that individual ability to determine drunkenness cannot be taken as a confirmation of a person’s ability to drive safely. Self evaluation of driving ability can be extremely prejudiced, and drivers can be prone to making errors in determining their own ability to drive safely.