Abstract
At the Highway Engineering Department of Gdansk Technical University behavioural techniques in safety research have been undertaken. One of them is in-car observation of driving behaviour (manoeuvres, braking, steering, speed, pulse rate) and road-traffic conditions. Behavioural data is used in close association with accident data in order to estimate accident risk caused by geometric and environment features. In the paper the data collection system, methodological problems and preliminary results are presented. (A) The German title of this article is: Das Beobachten des Verhaltens der Kraftfahrer in Hinsicht auf die Beurteilung des Unfallgefahres.