AN APPLICATION OF MICROCOMPUTERS TO RAILWAY SIGNALLING: THE PRS TYPE SIGNAL BOX SIMULATOR

Microprocessing has made it economically possible to develop an all-relay signal box (PRS) simulator, which can carry out a large number of signaling functions. Better knowledge of microprocessing by a number of railway signaling experts will enable computerized signaling systems to be set up in the future; the PRS simulator has already been used in setting up a system for monitoring train movements and automatic route control on the "Left Bank" cross-Paris line.