A protection system comprising: personal protective equipment that can be worn by a person on foot; interference-detection means, adapted to detect at 5 least one condition of interference between said person on foot when wearing said personal protective equipment and a fork-lift truck or a moving means, of the type provided with detection and actuation mechanisms; visual alert means, which are integrated in said personal protective equipment, are in a position normally visible to said person on foot when wearing said personal protective equipment, are operatively connected to said interference-detection means, and can be activated upon command for issuing an optical alert associated to said at least one condition of interference; vibrating alert means, which are integrated in said personal protective equipment, adapted to be in a position of contact with said person on foot when wearing said personal protective equipment, are operatively connected to said interference-detection means, and can be activated upon command for issuing a vibrating alert associated to said at least one condition of interference; and activation means, which are integrated in said personal protective equipment, and are operatively connected to movement-detection means for activating said visual and vibrating alert means in response to detection of 25 said at least one interference so as to detect any interference between said person on foot when wearing said personal protective equipment and a fork-lift truck/moving means by interacting directly with said person on foot when wearing said personal protective equipment through visual and perceptive vibrating stimuli, characterised in that it comprises optical detection means integrated in said personal protective equipment and operatively connected to said activation means for deactivating at least said vibrating alert means in response to optical detection of the fork-lift truck or moving means that is the cause of said at least one condition of interference. personal protective equipment that can be worn by a person on foot; interference-detection means, adapted to detect at 5 least one condition of interference between said person on foot when wearing said personal protective equipment and a fork-lift truck or a moving means, of the type provided with detection and actuation mechanisms; visual alert means, which are integrated in said personal protective equipment, are in a position normally visible to said person on foot when wearing said personal protective equipment, are operatively connected to said interference-detection means, and can be activated upon command for issuing an optical alert associated to said at least one condition of interference; vibrating alert means, which are integrated in said personal protective equipment, adapted to be in a position of contact with said person on foot when wearing said personal protective equipment, are operatively connected to said interference-detection means, and can be activated upon command for issuing a vibrating alert associated to said at least one condition of interference; and activation means, which are integrated in said personal protective equipment, and are operatively connected to movement-detection means for activating said visual and vibrating alert means in response to detection of 25 said at least one interference so as to detect any interference between said person on foot when wearing said personal protective equipment and a fork-lift truck/moving means by interacting directly with said person on foot when wearing said personal protective equipment through visual and perceptive vibrating stimuli, characterised in that it comprises optical detection means integrated in said personal protective equipment and operatively connected to said activation means for deactivating at least said vibrating alert means in response to optical detection of the fork-lift truck or moving means that is the cause of said at least one condition of interference.