Device and method for protecting a travel trajectory of an ego vehicle

A device for protecting a travel trajectory of an ego vehicle, comprising:

• an information evaluation device configured to:
• create an ego grid for a probable travel trajectory of the ego vehicle, predefined for the device or established by the device, through travel surroundings as at least part of instantaneous total surroundings of the ego vehicle in such a way that the ego grid includes multiple ego grid cells according to a subdivision of the travel surroundings, and a temporal occupation of a particular ego grid cell of the ego grid cells by the ego vehicle, driving along the travel trajectory, within a predefined or fixed time interval is established for each ego grid cell of the ego grid cells, and
• create a surroundings grid for the travel surroundings in such a way that the surroundings grid includes multiple surroundings grid cells according to the subdivision of the travel surroundings, and a temporal occupation of a particular surroundings grid cell of the surroundings grid cell by at least one object that is possibly present is established for each surroundings grid cell of the surroundings grid cell, taking into account at least one provided piece of surroundings information concerning the at least one object that is possibly present in the travel surroundings within the predefined or fixed time interval;
• and
• a grid evaluation device configured to examine each of the ego grid cell and a particular associated surroundings grid cell associated with it in each case, with regard to a simultaneous occupation of the ego grid cell by the ego vehicle, driving along the travel trajectory, and of the particular associated surroundings grid cell by the at least one object that is possibly present.