Rijden onder invloed in de provincie Flevoland, 1992-1993 : de ontwikkeling van het alcoholgebruik van automobilisten in weekeindnachten. In opdracht van Directoraat-Generaal Rijkswaterstaat, Adviesdienst Verkeer en Vervoer AVV en Directoraat-Generaal Rijkswaterstaat, Directie Flevoland.

In the night of Saturday, November 6th and Sunday, November 7th, 1993, the SWOV Institute for Road Safety Research and three police control teams conducted a roadside survey. The aim was to establish the motorists' alcohol consumption in the Dutch province of Flevoland. Blood alcohol content (BAC), age and sex of the drivers were collected and recorded. If the recorded BAC level was 0.5 promille or over, places of origin of the offenders were also collected and recorded. The 1993 sample included 743 motorists. The results of the 1993 survey are compared with the results of the 1992 survey