▁bus ▁service . ▁Alt ogether ▁ 5 4 ▁t rol ley b uses ▁were ▁purchased ▁( ve h icle ▁no . ▁ 3 0 0 ▁to ▁ 3 5 3 ). ▁ ▁The ▁transition ▁was ▁grad ual , ▁during ▁ 1 9 5 8 ▁first ▁t rol ley b uses ▁and ▁bus es ▁started ▁to ▁regularly ▁operate ▁in ▁L jub lj ana , ▁tr ams ▁stopped ▁driving , ▁the ▁Ele kt ri č na ▁c est na ▁ž ele zn ica ▁was ▁renamed ▁to ▁L jub lj ana - Transport . ▁Last ▁journey ▁of ▁tram ▁was ▁on ▁December ▁ 2 0 , ▁ 1 9 5 8 . ▁Like ▁tram ways , ▁t rol ley b uses ▁were ▁also ▁elect r ically ▁power ed ▁and ▁therefore ▁were ▁depending ▁on ▁the ▁power ▁lines ▁installed ▁in ▁the ▁city . ▁ ▁T rol ley bus ▁lines ▁that ▁operated : ▁▁ ▁Line ▁no . ▁ 1 ▁V ič ▁– ▁Vi ž mar je ▁ ▁Line ▁no . ▁ 6 ▁V ič ▁– ▁Je ž ica ▁ ▁Line ▁no . ▁ 7 ▁Lit ost ro j ▁– ▁A jd ov šč ina ▁ ▁Line ▁no . ▁ 8 ▁Lit ost ro j ▁– ▁Č r nu če ▁Exper ience ▁with ▁the ▁operation ▁of ▁t rol ley b uses ▁was ▁not ▁best . ▁T rol ley bus ' s ▁current ▁collect ors ▁often ▁" f ell ▁off " ▁and ▁had ▁to ▁be ▁re installed ▁each ▁time . ▁During ▁winter s ▁there ▁were ▁additional ▁problems ▁caused ▁by ▁snow ▁and ▁road