Method for selecting safety measures to be taken to increase the safety of vehicle occupants of a vehicle with respect to a hazard presented by environmental influences, comprising the steps: - receiving positional data of the vehicle, - receiving warning message data which contain data relating to a position of the hazard presented by environmental influences, characterized by: - inferring the type of hazard on the basis of classification data contained in the warning message data, wherein the classification data are data which indicate different classes of hazards, - inferring the relevance of the hazard for the vehicle by comparing the warning message data with the position data of the vehicle, - inferring the relevance of the hazard additionally on the basis of sensor data which is made available by at least one sensor unit, wherein specific sensor data which are relevant for the type of hazard determined on the basis of the classification data are accessed as a function of the type of hazard, - selecting and taking at least one of the safety measures as a function of the relevance if a hazard presented to the vehicle or a vehicle occupant is inferred from the relevance determined on the basis of the comparison and the sensor data, wherein the safety measures comprise actuating an actuator in the vehicle, wherein - at least one of the following safety measures is selected: - closing windows of the vehicle, - extending a rollover bar, - closing a convertible roof, and - setting a ventilation system or air-conditioning system to internal air circulation. - receiving positional data of the vehicle, - receiving warning message data which contain data relating to a position of the hazard presented by environmental influences, characterized by: - inferring the type of hazard on the basis of classification data contained in the warning message data, wherein the classification data are data which indicate different classes of hazards, - inferring the relevance of the hazard for the vehicle by comparing the warning message data with the position data of the vehicle, - inferring the relevance of the hazard additionally on the basis of sensor data which is made available by at least one sensor unit, wherein specific sensor data which are relevant for the type of hazard determined on the basis of the classification data are accessed as a function of the type of hazard, - selecting and taking at least one of the safety measures as a function of the relevance if a hazard presented to the vehicle or a vehicle occupant is inferred from the relevance determined on the basis of the comparison and the sensor data, wherein the safety measures comprise actuating an actuator in the vehicle, wherein - at least one of the following safety measures is selected: - closing windows of the vehicle, - extending a rollover bar, - closing a convertible roof, and - setting a ventilation system or air-conditioning system to internal air circulation. - inferring the type of hazard on the basis of classification data contained in the warning message data, wherein the classification data are data which indicate different classes of hazards, - inferring the relevance of the hazard for the vehicle by comparing the warning message data with the position data of the vehicle, - inferring the relevance of the hazard additionally on the basis of sensor data which is made available by at least one sensor unit, wherein specific sensor data which are relevant for the type of hazard determined on the basis of the classification data are accessed as a function of the type of hazard, - selecting and taking at least one of the safety measures as a function of the relevance if a hazard presented to the vehicle or a vehicle occupant is inferred from the relevance determined on the basis of the comparison and the sensor data, wherein the safety measures comprise actuating an actuator in the vehicle, wherein - at least one of the following safety measures is selected: - closing windows of the vehicle, - extending a rollover bar, - closing a convertible roof, and - setting a ventilation system or air-conditioning system to internal air circulation. - closing windows of the vehicle, - extending a rollover bar, - closing a convertible roof, and - setting a ventilation system or air-conditioning system to internal air circulation.