Index of /vol_400/461_01/

Dean Lance Smith and Mohammad Musa present their paper "Two Software Data Organizations that Support Railroad Signalling" and accompanying C source. This program models a control system capable of understanding an entire railroad line composed of any combination of Automatic Blocking System (ABS) and Centralized Traffic Control (CTC) blocks. In railroad parlance, a "signal block" or "block", is a length of rail track that is controlled by a block signal. A block may contain two or more tracks in various track configurations. Most blocks have at least one main track. Two or more main tracks may also be in parallel in a block. A block may also contain lines that cross the main track(s), turnouts, branch lines, or sidings. Two or more blocks constitute a rail line.