8 5 6 7 . ▁ ▁The ▁R 3 0 s ▁were ▁couple d ▁together ▁as ▁pairs . ▁ ▁These ▁cars , ▁along ▁with ▁their ▁identical ▁R 2 7 ▁sister ▁cars , ▁replaced ▁the ▁oldest ▁B MT ▁Stand ards ▁( including ▁all ▁ 5 0 ▁of ▁the ▁tra iler ▁cars ), ▁the ▁ME - 1 s ▁purchased , ▁and ▁transferred ▁from ▁the ▁S IR T , ▁the ▁MS ▁Multi - section ▁cars , ▁and ▁the ▁I RT ▁Lo - V s ▁that ▁were ▁modified ▁to ▁be ▁used ▁on ▁B - div ision ▁sh utt les . ▁The ▁cars ▁also ▁permitted ▁all ▁borrow ed ▁IN D ▁equipment ▁such ▁as ▁the ▁R 1 / 9 ' s ▁used ▁on ▁the ▁# 2 ▁Four th ▁Avenue ▁Local ' s ▁extension ▁to ▁Ast oria - D it m ars ▁Bl vd , ▁and ▁the ▁R 1 0 ▁cars ▁used ▁on ▁the ▁# 1 5 ▁J ama ica ▁Line ▁to ▁be ▁returned ▁to ▁their ▁respective ▁lines ▁on ▁the ▁IN D ▁division , ▁and ▁also ▁helped ▁to ▁stabil ized ▁the ▁B MT ▁division ▁to ▁a ▁certain ▁extent ▁until ▁the ▁R 3 2 ▁cars ▁were ▁delivered ▁to ▁the ▁B MT ▁lines ▁in ▁ 1 9 6 5 . ▁ ▁There ▁were ▁three ▁versions ▁of ▁the ▁R 3 0 : ▁West ing house ▁( WH ) ▁X CA 2 4 8 - power ed ▁equ ipped ▁cars ▁( 8 4 1 2 – 8 5 6 9 ), ▁General ▁Electric ▁( GE ) ▁MC M - power ed ▁cars ▁( 8