TOWARDS A REAL TIME WORKLOAD OF THE DRIVER : THE ANALYSIS OF DRIVING PERFORMANCE EVOLUTION UNDER OVERLOADED CONDITIONS

Since a few years ago, the tendency has been towards increasing the number of in-vehicle Driver Assistance Systems (DAS). These systems can be more or less useful for the driving but before being integrated in a wide range of vehicles, the compatibility with the driving task must be discussed. A previous study, using on-line subjective workload assessment has shown the limits of such an approach. This paper describes a second experiment whose goal is the design of a workload indicator based on objective and subjective measures by the study of the driving performance when the driver becomes overloaded.