Method for operating an infrastructure system, which comprises the following steps: installing an infrastructure system, comprising a driverless transport system with at least one driverless transport vehicle, as well as a control system, wherein the infrastructure system comprises in addition at least one security region with an entry region (4, 6) through which the driverless transport vehicle can pass, wherein the at least one driverless transport vehicle has a security scanner which emits a scanning signal with a specific scanning frequency and which, independently of a navigation system for controlling and determining the position of the driverless transport vehicle, detects objects and obstructions situated in the travelling region of the driverless transport vehicle, wherein a sensor is arranged in the entry region (4, 6) and can detect the scanning signal which is emitted by the at least one driverless transport vehicle, wherein the control system in response to a predetermined scanning signal detected by the sensor ascertains the presence and/or an authorisation, required for travelling through the security region, of the driverless transport vehicle in the entry region (4, 6), detecting a scanning signal of the at least one driverless transport vehicle by means of the sensor characterised in that it contains the following steps checking whether the detected scanning signal does or does not belong to a driverless transport vehicle, in particular one authorised or passing through a gateway (4, 6), wherein the control system causes the opening of a gateway (4, 6) situated in the entry region to the security region, if the detected scanning signal belongs to a driverless transport vehicle which is authorised to pass through, or wherein the control system does not cause the opening of the gateway (4, 6) if the detected scanning signal does not belong to an authorised driverless transport vehicle, wherein the checking of whether the detected scanning signal belongs or does not belong to a driverless transport vehicle authorised to pass through the gateway (4, 6), is carried out by checking whether the scanning frequency of the scanning signal corresponds to a predetermined target value or a target value filed in the control system of the driverless transport system, and/or lies in a predetermined target value interval. installing an infrastructure system, comprising a driverless transport system with at least one driverless transport vehicle, as well as a control system, wherein the infrastructure system comprises in addition at least one security region with an entry region (4, 6) through which the driverless transport vehicle can pass, wherein the at least one driverless transport vehicle has a security scanner which emits a scanning signal with a specific scanning frequency and which, independently of a navigation system for controlling and determining the position of the driverless transport vehicle, detects objects and obstructions situated in the travelling region of the driverless transport vehicle, wherein a sensor is arranged in the entry region (4, 6) and can detect the scanning signal which is emitted by the at least one driverless transport vehicle, wherein the control system in response to a predetermined scanning signal detected by the sensor ascertains the presence and/or an authorisation, required for travelling through the security region, of the driverless transport vehicle in the entry region (4, 6), detecting a scanning signal of the at least one driverless transport vehicle by means of the sensor characterised in that it contains the following steps checking whether the detected scanning signal does or does not belong to a driverless transport vehicle, in particular one authorised or passing through a gateway (4, 6), wherein the control system causes the opening of a gateway (4, 6) situated in the entry region to the security region, if the detected scanning signal belongs to a driverless transport vehicle which is authorised to pass through, or wherein the control system does not cause the opening of the gateway (4, 6) if the detected scanning signal does not belong to an authorised driverless transport vehicle, wherein the checking of whether the detected scanning signal belongs or does not belong to a driverless transport vehicle authorised to pass through the gateway (4, 6), is carried out by checking whether the scanning frequency of the scanning signal corresponds to a predetermined target value or a target value filed in the control system of the driverless transport system, and/or lies in a predetermined target value interval.