A safety system for localizing at least two objects having variable locations, having at least one control and evaluation unit, having at least one radio location system, wherein the radio location system has at least three arranged radio stations; wherein at least one radio transponder is respectively arranged at the objects; wherein position data of the radio transponder and thus position data of the objects can be determined by means of the radio location system; with the position data being able to be transmitted from the radio station of the radio location system to the control and evaluation unit; and/or with the position data being able to be transmitted from the radio transponder to the control and evaluation unit, wherein the control and evaluation unit is configured to cyclically detect the position data of the radio transponders, with the radio transponders having identification, with a respective radio transponder being associated with a respective object, whereby the control and evaluation unit is configured to distinguish the objects; and wherein the control and evaluation unit is configured to associate a risk index with every object at least in dependence on the position of the object with respect to another object, wherein the risk index indicates how great the danger of an object is, with first objects being persons and second objects being mobile vehicles, characterized in that the radio location system is an ultrawide band radio location system, with the frequency used being in the range from 3.1 GHz to 10.6 GHz, with the transmission energy per radio station amounting to a maximum of 0,5 mW and with at least one job planning for a plant and target coordinates of the mobile vehicles being read by the control and evaluation unit, with process steps of the machine or plant being read by the control and evaluation unit, and with a degree of productivity of the plant, of the machine, and/or of the objects being detected by means of the control and evaluation unit, with the control and evaluation unit being configured to control and thus to influence the machine and/or the mobile vehicle, with a change of an order of individual process steps of an automation routine being provided on a directly impending danger. wherein the radio location system has at least three arranged radio stations; wherein at least one radio transponder is respectively arranged at the objects; wherein position data of the radio transponder and thus position data of the objects can be determined by means of the radio location system; with the position data being able to be transmitted from the radio station of the radio location system to the control and evaluation unit; and/or with the position data being able to be transmitted from the radio transponder to the control and evaluation unit, wherein the control and evaluation unit is configured to cyclically detect the position data of the radio transponders, with the radio transponders having identification, with a respective radio transponder being associated with a respective object, whereby the control and evaluation unit is configured to distinguish the objects; and wherein the control and evaluation unit is configured to associate a risk index with every object at least in dependence on the position of the object with respect to another object, wherein the risk index indicates how great the danger of an object is, with first objects being persons and second objects being mobile vehicles, characterized in that the radio location system is an ultrawide band radio location system, with the frequency used being in the range from 3.1 GHz to 10.6 GHz, with the transmission energy per radio station amounting to a maximum of 0,5 mW and with at least one job planning for a plant and target coordinates of the mobile vehicles being read by the control and evaluation unit, with process steps of the machine or plant being read by the control and evaluation unit, and with a degree of productivity of the plant, of the machine, and/or of the objects being detected by means of the control and evaluation unit, with the control and evaluation unit being configured to control and thus to influence the machine and/or the mobile vehicle, with a change of an order of individual process steps of an automation routine being provided on a directly impending danger.