micro computer automatic block system with AC counting code track circuit
multi-code code detection
engineering district;maintenance of way section;track division;track district;track maintenance division
jointless line;continuously welded rail track;jointless track
non-NTDS track {dummy track}
replacing and laying track with track panel
track-to-track association
track-to-track moving time
transforming single track into double track
double - track existing single track line
accept code register and mask code register
bar code, bar code reader
binary-code decimal code
Bose-Chaudhuri-Hooguenghem code (BCH code)