An arrangement for generating digital signals on first and second bus lines is tolerant of most line faults, and includes modules connected to both lines, an upper switch between a first potential and the first line, a middle switch between the two lines, and a lower switch between the second line and a second potential lower than the first potential. The brake pedal shoe of the vehicle has a hollow interior, and an optical signal is transmitted along an optical transmission path extending therethrough. The platelets if administered to a patient prevent an HLA alloimmune response from said patient. In another step, an exemplary embodiment selects the 1-hot-of-n control or the conditioned 1-hot-of-n control based on a current instruction mode.