Safety process relating to a vehicle incorporating driving means and at least one station for a person, including at least one operating station for a person to serve the vehicle - in particular the driver in command -, and at least one person fitted with at least one medical device, the vehicle being designed so that at least one person fitted with a device is associated with it while being at one station of the vehicle - in particular the operating station to serve the vehicle -, in which: - there is a medical device designed to operate in response to physiological data of the person fitted with a device and to generate, when the occurrence arises, an alarm signal warning of malfunction of the medical device per se and an alarm signal of an actual or inferred problem relating to the medical condition of the person fitted with the device, - there is a safety module designed to be structurally associated with the vehicle, to receive data generated by the medical device while the person fitted with the device is associated with the vehicle, and to generate information matching the data it receives, - the medical device and the safety module are such that the safety module operates without receiving or storing the physiological data of the person fitted with the medical device making this non-compulsory, - as the person fitted with the device is associated with the vehicle and the vehicle is associated the safety module, encrypted communication is established between the medical device and the safety module, so that the medical device generates - when justified - a malfunction alarm signal and/or an alarm signal for an actual or inferred medical problem and the safety module generates at least one alarm notification in line with an alarm signal, - at least one alarm notification is thereby transferred to an operator (4, C, 12). - there is a medical device designed to operate in response to physiological data of the person fitted with a device and to generate, when the occurrence arises, an alarm signal warning of malfunction of the medical device per se and an alarm signal of an actual or inferred problem relating to the medical condition of the person fitted with the device, - there is a safety module designed to be structurally associated with the vehicle, to receive data generated by the medical device while the person fitted with the device is associated with the vehicle, and to generate information matching the data it receives, - the medical device and the safety module are such that the safety module operates without receiving or storing the physiological data of the person fitted with the medical device making this non-compulsory, - as the person fitted with the device is associated with the vehicle and the vehicle is associated the safety module, encrypted communication is established between the medical device and the safety module, so that the medical device generates - when justified - a malfunction alarm signal and/or an alarm signal for an actual or inferred medical problem and the safety module generates at least one alarm notification in line with an alarm signal, - at least one alarm notification is thereby transferred to an operator (4, C, 12).