The effects on driver performance of Blood Alcohol Concentrations (BAC) below 50 mg % were studied in two contexts: 1. in a critical automobile driving situation involving emergency braking and evasive maneuvers and 2. in a surprise situation that followed the first one and featured the sudden appearance of a man-shaped obstacle blocking the roadway. The results indicate the detrimental effects of alcohol at a total BAC average of 42 mg %. In the braking and maneuvering task, drivers under the influence of alcohol hit significantly more pylons and took significantly longer distances to stop. There was also a strong tendency for alcohol to impair performance in the surprise situation. Under the influence of alcohol five drivers out of ten collided with the obstacle; this was the case for only one driver out of ten in the control (non-alcohol) condition.
Effects of Small Doses of Alcohol on Driver Performance in Emergency Traffic Situations
1975
27 pages
Report
Keine Angabe
Englisch
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