COLLISION WARNING DEVICE, VEHICLE COMPRISING A COLLISION WARNING DEVICE, METHOD FOR OPERATING A COLLISION WARNING DEVICE, COMPUTER PROGRAM AND COMPUTER-READABLE MEDIUM

A collision warning device is disclosed, including a control apparatus. If relevance criterion is met, the control apparatus ascertains respective collision values of the collision parameter, relating to a predicted collision event between the trailer and an object for the control values of the predefined control value range, to take the respective collision values of the collision parameter for the control value range as a basis for ascertaining an impact function in relation to the trailer for the object. The impact function assigns to the control values of the control value range an impact value relating to the predicted collision event between the trailer and the object, to ascertain the overall impact function of the vehicle-trailer combination from the respective impact function in relation to the vehicle of the object and the respective impact function in relation to the trailer of the object.