This was an exploratory, descriptive study that aimed to correlate alcohol levels detected in fatal victims of traffic accidents, in Rio de Janeiro city, with the victims profile and the characteristics of the accident. The data were retrieved from the registers of the Legal Medicine Institute/IML, through the registers of the medical records of the fatal victims of traffic accidents. Compiled and tabulated using the Statistics Program SPSS, for the period between January and May 2005, 348 fatal victims of traffic accidents were reported. Of these victims, 94 had been tested for alcohol, of these, 83 had levels of alcohol detected, 60.2% presented levels above 0.6g/l blood. The use of alcohol was evident, at levels above and below 0.6g per liter of blood, in the cases of fatal victims of traffic accidents.