Method for dynamically restraining a passenger strapped into a vehicle seat by means of a seat belt, wherein a lateral acceleration (a q) of the vehicle and the course of a road ahead of the vehicle are determined - by predicting a lateral acceleration (a q) to be expected over the course of a bend ahead of the vehicle on the basis of image data of a vehicle environment recorded by means of at least one vehicle-mounted camera and/or on the basis of recorded data of a navigation map, and - in the event that the predicted lateral acceleration (a q) exceeds a predefined trigger threshold for tightening the seat belt, a belt force acting on the seat belt is increased before the lateral acceleration (a q) acts on the passenger characterized in that a plurality of situation-dependent trigger thresholds (A1 to An) for increasing the belt force are stored, wherein these are plausibly designed to suit the situation and, on the basis of further situation information and the driving speed (v) of the vehicle, a trigger threshold (A1 to An) corresponding to the current situation is determined - according to a set driving mode, - according to the time of day and/or ambient brightness, - according to a recorded local accident frequency and/or - according to information determined from traffic signs. wherein a lateral acceleration (a q) of the vehicle and the course of a road ahead of the vehicle are determined - by predicting a lateral acceleration (a q) to be expected over the course of a bend ahead of the vehicle on the basis of image data of a vehicle environment recorded by means of at least one vehicle-mounted camera and/or on the basis of recorded data of a navigation map, and - in the event that the predicted lateral acceleration (a q) exceeds a predefined trigger threshold for tightening the seat belt, a belt force acting on the seat belt is increased before the lateral acceleration (a q) acts on the passenger - by predicting a lateral acceleration (a q) to be expected over the course of a bend ahead of the vehicle on the basis of image data of a vehicle environment recorded by means of at least one vehicle-mounted camera and/or on the basis of recorded data of a navigation map, and - in the event that the predicted lateral acceleration (a q) exceeds a predefined trigger threshold for tightening the seat belt, a belt force acting on the seat belt is increased before the lateral acceleration (a q) acts on the passenger characterized in that a plurality of situation-dependent trigger thresholds (A1 to An) for increasing the belt force are stored, wherein these are plausibly designed to suit the situation and, on the basis of further situation information and the driving speed (v) of the vehicle, a trigger threshold (A1 to An) corresponding to the current situation is determined - according to a set driving mode, - according to the time of day and/or ambient brightness, - according to a recorded local accident frequency and/or - according to information determined from traffic signs. - according to a set driving mode, - according to the time of day and/or ambient brightness, - according to a recorded local accident frequency and/or - according to information determined from traffic signs.