5 . ▁ ▁C ategories ▁The ▁full ▁set ▁of ▁GC OR ▁rules ▁is ▁divided ▁into ▁ 1 7 ▁categories . ▁General ▁Res p ons ib ilities ▁Rail road ▁Radio ▁R ules ▁Standard ▁Time ▁ ▁** Some ▁rail ro ads ▁may ▁am end ▁this ▁item ▁into ▁the ▁System ▁Special ▁Inst ru ctions . ▁Tim et ables ▁Sign als ▁and ▁Their ▁Use ▁Mov ement ▁of ▁Tra ins ▁and ▁Eng ines ▁Switch ing ▁Switch es ▁Block ▁System ▁R ules ▁R ules ▁App lic able ▁only ▁in ▁Central ized ▁Tra ffic ▁Control ▁( CT C ) ▁R ules ▁App lic able ▁in ▁A CS ▁and ▁A TS ▁Territ ory ▁R ules ▁App lic able ▁only ▁in ▁Autom atic ▁Train ▁Stop ▁( AT S ) ▁Territ ory ▁R ules ▁App lic able ▁only ▁in ▁Autom atic ▁Cab ▁Sign al ▁( AC S ) ▁Territ ory ▁R ules ▁App lic able ▁only ▁within ▁Track ▁W arr ant ▁Control ▁( TW C ) ▁Lim its ▁Track ▁Bul letin ▁R ules ▁R ules ▁App lic able ▁only ▁in ▁Direct ▁Tra ffic ▁Control ▁( D TC ) ▁Territ ory ▁R ules ▁App lic able ▁Only ▁in ▁Autom atic ▁Train ▁Control ▁( AT C ) ▁Territ ory ▁ ▁See ▁also ▁N ortheast ▁Oper ating ▁R ules ▁Ad vis ory ▁Committee ▁Canadian ▁Rail ▁Oper ating ▁R ules ▁ ▁References ▁ ▁External ▁links ▁U ▁S ▁Department ▁of ▁Transport ation ▁- ▁Comp liance ▁with ▁Rail road ▁Oper ating ▁R ules ▁and ▁Corpor ate ▁Culture ▁In flu ences , ▁October ▁ 1 9 9 9 ▁General ▁Code