Driving under the influence of alcohol is still one of the main risk factors for the occurrence of a traffic accident.
Our capabilities regarding safe participation in traffic, detection, prediction, judgment and decision-making, including final execution of appropriate action, is reduced because of alcohol. That is why, in comparison with that of sober driving, the probability of causing an accident doubles at a blood alcohol concentration of 0.5 promille, and is eight-times higher at 1.1 promille.
Alcohol is most problematic with drivers in instances where the consequences of traffic accidents are most severe, but it is also a risk factor for the occurrence of traffic accidents involving cyclists and pedestrians. About one quarter of traffic accidents with casualties and severe injuries are related to the influence of alcohol.