Rijden onder invloed in de provincie Gelderland, 1995-1996 : ontwikkeling van het alcoholgebruik door automobilisten in weekendnachten. In opdracht van het Directoraat-Generaal Rijkswaterstaat, Directie Oost-Nederland.

In the months October and November 1996, the SWOV Institute for Road Safety Research and eight police control teams conducted a roadside survey. The aim was to establish the motorists' alcohol consumption in the Dutch province of Gelderland. Blood alcohol content (BAC), age and sex of the drivers were collected and recorded. If the recorded BAC level was 0.7 promille or over, places of origin of the offenders were also collected and recorded. The study was carried out on Friday and Saturday nights. The 1996 sample included 2433 motorists. The collected data were analysed using the Weighted Poisson Model (WPM). The results of the 1996 survey are compared with the results of the 1995 survey in the province of Gelderland and with the results of the 1995 national survey.