The ViewCar is a test and measurement vehicle for analysing the perception processes and behaviour of drivers in road traffic. It is equipped with sensors for measuring and recording the traffic environment, the operation of the vehicle and the resulting vehicle behaviour. The ViewCar permits investigations designed to improve understanding and modelling of driver behaviour. The ViewCar is used to analyse and evaluate driver behaviour in particular traffic situations. This data serves as the basis for the development of driver assistance systems and operating and display concepts.