9 COMPUTER HARDWARE, TRANSMITTERS, RECEIVERS; DECODERS; COMPUTER-BASED ELECTRONIC REMOTE CONTROL UNITS THAT ALLOWS CONTROL OF LOCOMOTIVE, WHILE OPERATING IN REMOTE MODE, TO BE TRANSFERRED FROM ONE OPERATOR TO ANOTHER WHILE ALLOWING ANY ONE OF THE OPERATORS TO HAVE CONTINUOUS ACCESS TO CRITICAL SAFETY DEVICES, INCLUDING EMERGENCY BRAKE, THE HORN, ETC;