UNION PACIFIC -- RAILROADING
BASICS (GCOR)
Main[Track[-[ans-
✔✔A[track[extending[through[yards[and[between[stations[that[must[not[be[occupied[witho
ut[authority[or[protection.
Station[-[ans-✔✔A[place[designated[by[name[in[the[timetable[station[column.
Single[Track[-[ans-✔✔A[main[track[where[trains[are[operated[in[both[directions.
Train[-[ans-✔✔One[or[more[engines[coupled,[with[or[without[cars,[displaying[a[marker,
[and[authorized[to[operate[on[a[main[track.
[A[term[that[when[used[in[connection[with[speed[restrictions,[flag[protection,
[and[the[observance[of[all[signals[and[signal[rules[also[applies[to[engines.
Yard[Limits[-[ans-
✔✔A[portion[of[*main[track*[designated[by[yard[limit[signs[and[timetable[special[instructio
ns[or[a[track[bulletin.[Within[Yard[Limits,
[trains[or[engines[are[authorized[to[use[the[main[track[not[protecting[against[other[trains[or[
engines.[*You[can[have[Yard[Limits[without[a[yard.*[(Rule[6.13)
Yard[-[ans-✔✔A[system[of[tracks,[other[than[main[tracks[and[sidings,
[used[for[making[up[trains,[storing[cars,[and[other[purposes.
Siding[-[ans-
✔✔A[track[connected[to[the[main[track[and[used[for[meeting[or[passing[trains.
[Location[of[sidings[are[shown[in[the[timetable.
Spur[Track[-[ans-✔✔A[track[connected[to[another[track[at[only[one[end,
[also[referred[to[as[a[stub[track.
Track[Bulletin[-[ans-✔✔A[notice[of[conditions[affecting[train[movement.
[It[may[also[authorize[movement[against[the[current[of[traffic[where[Rule[9.14
(Movement[with[the[Current[of[Traffic)[is[in[effect.
Track[Warrant[Control[(TWC)[-[ans-
✔✔A[method[to[authorize[train[movements[or[protect[men[or[machines[on[a[main[track[wit
hin[specified[limits[in[a[territory[designated[by[the[timetable.
BASICS (GCOR)
Main[Track[-[ans-
✔✔A[track[extending[through[yards[and[between[stations[that[must[not[be[occupied[witho
ut[authority[or[protection.
Station[-[ans-✔✔A[place[designated[by[name[in[the[timetable[station[column.
Single[Track[-[ans-✔✔A[main[track[where[trains[are[operated[in[both[directions.
Train[-[ans-✔✔One[or[more[engines[coupled,[with[or[without[cars,[displaying[a[marker,
[and[authorized[to[operate[on[a[main[track.
[A[term[that[when[used[in[connection[with[speed[restrictions,[flag[protection,
[and[the[observance[of[all[signals[and[signal[rules[also[applies[to[engines.
Yard[Limits[-[ans-
✔✔A[portion[of[*main[track*[designated[by[yard[limit[signs[and[timetable[special[instructio
ns[or[a[track[bulletin.[Within[Yard[Limits,
[trains[or[engines[are[authorized[to[use[the[main[track[not[protecting[against[other[trains[or[
engines.[*You[can[have[Yard[Limits[without[a[yard.*[(Rule[6.13)
Yard[-[ans-✔✔A[system[of[tracks,[other[than[main[tracks[and[sidings,
[used[for[making[up[trains,[storing[cars,[and[other[purposes.
Siding[-[ans-
✔✔A[track[connected[to[the[main[track[and[used[for[meeting[or[passing[trains.
[Location[of[sidings[are[shown[in[the[timetable.
Spur[Track[-[ans-✔✔A[track[connected[to[another[track[at[only[one[end,
[also[referred[to[as[a[stub[track.
Track[Bulletin[-[ans-✔✔A[notice[of[conditions[affecting[train[movement.
[It[may[also[authorize[movement[against[the[current[of[traffic[where[Rule[9.14
(Movement[with[the[Current[of[Traffic)[is[in[effect.
Track[Warrant[Control[(TWC)[-[ans-
✔✔A[method[to[authorize[train[movements[or[protect[men[or[machines[on[a[main[track[wit
hin[specified[limits[in[a[territory[designated[by[the[timetable.
