[Effect of low blood alcohol concentrations in relation to time of day].

The physical performance of 23 persons was tested at different time of day (morning, noon, evening) under the influence of low doses of alcohol (0.8%). The results obtained indicate, that the capability of performing the tests was remarkable reduced. In the evening the effect of alcohol was significantly higher than at noon and morning; the time of recovery was also prolonged. Under these aspects the limit of 0.8% for car drivers in (West) Germany has to be reconsidered.