. ▁Tri als ▁were ▁also ▁carried ▁out ▁for ▁further ▁up gr ades , ▁with ▁locomot ive ▁A 8 5 ▁re - ge ared ▁for ▁ 1 6 0   km / h ▁operation ▁in ▁a ▁series ▁of ▁test ▁runs ▁between ▁Glen or chy ▁and ▁L ube ck ▁in ▁the ▁state ' s ▁west ▁in ▁July ▁ 1 9 8 6 . <0x09> ▁ ▁It ▁was ▁also ▁the ▁end ▁of ▁an ▁era , ▁with ▁fre ight ▁trains ▁having ▁their ▁gu ards ▁v ans ▁and ▁gu ards ▁abol ished ▁from ▁ 1 9 8 5 , ▁and ▁the ▁carriage ▁of ▁liv est ock ▁ended ▁in ▁ 1 9 8 6 . ▁The ▁last ▁run ▁of ▁the ▁Spirit ▁of ▁Progress ▁and ▁Southern ▁Aur ora ▁passenger ▁trains ▁were ▁also ▁made ▁in ▁ 1 9 8 6 , ▁on ▁ 3 ▁August . ▁Working ▁practices ▁were ▁also ▁alter ed , ▁with ▁through ▁working ▁of ▁C ▁class ▁locomot ives ▁introduced ▁between ▁Melbourne ▁and ▁Ad ela ide ▁in ▁ 1 9 8 2 . ▁Pre viously ▁Victor ian ▁locomot ives ▁were ▁det ached ▁at ▁the ▁state ▁borders , ▁and ▁replaced ▁by ▁locomot ives ▁from ▁the ▁next ▁state . ▁New ▁locomot ive ▁were ▁also ▁introduced , ▁with ▁the ▁G ▁and ▁N ▁classes ▁en abling ▁the ▁ret irement ▁of ▁many ▁of ▁the ▁ 1 st ▁generation ▁dies els . ▁▁▁ ▁C uts ▁continued ▁to ▁the ▁rail ▁network , ▁with ▁larger ▁central ised ▁sil os ▁in ▁the ▁north ▁western ▁area ▁of ▁the ▁state , ▁and ▁replacement ▁of ▁traditional ▁saf ew ork ing ▁systems