JTDS Joint Track Data Storage
engineering district；maintenance of way section；track division；track district；track maintenance division
AFR fuel storage (away-from-reactor fuel storage)
storage to storage instruction
tape storage bin magnetic tape storage
work storage to auxiliary storage
storage-to-storage instruction
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