▁B LE AG ▁by ▁The ▁German ▁Railway ▁Oper ating ▁Company ▁( De utsch e ▁Eisen bahn - B et rie bs - G es ellschaft ), ▁DE B G ) ▁in ▁ 1 9 3 2 ▁were ▁operations ▁between ▁Bus en bach ▁and ▁It ters bach ▁res umed . ▁The ▁line ▁was ▁elect r ified ▁again ▁by ▁ 1 9 3 6 . ▁ ▁On ▁ 1 ▁April ▁ 1 9 5 7 , ▁the ▁AV G ▁finally ▁took ▁over ▁the ▁line . ▁Un like ▁the ▁neighbour ing ▁Alb ▁Valley ▁Railway , ▁the ▁line ▁to ▁It ters bach ▁by ▁AV G ▁was ▁not ▁upgrad ed ▁for ▁full ▁operations , ▁but ▁instead ▁it ▁was ▁tempor arily ▁closed ▁down ▁on ▁ 1 4 ▁November ▁ 1 9 6 4 . ▁It ▁was ▁not ▁until ▁almost ▁two ▁years ▁later , ▁on ▁ 3 0 ▁June ▁ 1 9 6 6 , ▁that ▁the ▁section ▁to ▁Lang en stein bach ▁Süd ▁was ▁re open ed ▁with ▁standard ▁gauge ▁and ▁elect r ified ▁at ▁ 7 5 0 ▁Vol t ▁DC . ▁ ▁The ▁following ▁section ▁to ▁It ters bach ▁remained ▁closed ▁due ▁to ▁low ▁demand . ▁It ▁was ▁not ▁until ▁the ▁municipality ▁of ▁Kar ls bad ▁was ▁founded ▁in ▁ 1 9 7 1 ▁that ▁it ▁was ▁decided ▁to ▁re construct ▁the ▁Lang en stein bach – It ters bach ▁section . ▁This ▁section ▁was ▁re open ed ▁on ▁ 1 6 ▁October ▁ 1 9 7 5 . ▁The ▁new ▁line ▁left ▁its ▁original ▁route ▁to