Patent ID: 7755473

Claim:
An active safety system for a vehicle comprising: an external object sensor system arranged on a host vehicle, the sensor system being arranged to, within a detecting range of the sensor system, sense objects (k) external to the host vehicle and generate input data relating to the objects (k), wherein the input data includes an object position ((R, ψ rel )(t)), a threat indicator arranged to assign a threat level (T k (t)) to each external object (k) detected by the sensor system; characterised in that the active safety system further includes: an eye gaze recorder arranged for recording the direction of gaze (φ(t)) of a user, determined by an eye gaze monitor; an awareness detector arranged to determine awareness (A k (t)) of an object (k) based on an assessed observation, which observation is being assessed by use of a recorded direction of gaze (φ(t)) of the user and the object position ((R, ψ rel )(t)); and a controller arranged to, for objects (k) detected by the sensor system and objects which the user is aware of ((A k (t))=1), collect threat level data (T k (t)) from the threat indicator, to store threat level data (T k (t)) collected at different points in time, to assign a threat level awareness (T k (t k0 )) by selecting the threat level (T k (t)) at a time at which the object (k) was observed (t k0 ), and to compare a current threat level (T k (t)) of the object (k) with the threat level awareness (T k (t k0 )).