Confidence estimation for predictive driver assistance systems based on plausibility rules

The invention relates to a driving assistance system (100) including a prediction subsystem (110) in a vehicle. According to a method aspect of the invention, the method comprises the steps of accepting an environment representation (120); calculating a confidence estimate related to the environment representation based on applying plausibility rules (122) on the environment representation, and providing the confidence estimate as input for an evaluation of a prediction based on the environment representation.