5 8 6 , ▁used ▁for ▁maintenance ▁( un us ual ▁for ▁having ▁a ▁p ant ograph ▁instead ▁of ▁a ▁t rol ley ▁pole ). ▁ ▁Al st hom - V e vey - D ue w ag ▁art ic ulated ▁tram c ars ▁ ▁This ▁class ▁of ▁tram c ars , ▁a ▁variation ▁of ▁the ▁Tr am way ▁Fran çais ▁Standard , ▁exists ▁in ▁two ▁types , ▁tram c ars ▁introduced ▁in ▁ 1 9 9 1 ▁and ▁those ▁in ▁ 1 9 9 8 . ▁The ▁first ▁class ▁was ▁introduced ▁between ▁ 1 9 9 1 ▁and ▁ 1 9 9 2 ▁at ▁the ▁time ▁of ▁the ▁line ▁extension ▁to ▁. ▁They ▁are ▁number ed ▁ 9 0 1 ▁to ▁ 9 1 5 ▁and ▁have ▁a ▁se ating ▁capacity ▁of ▁ 4 3 . ▁In ▁ 1 9 9 8 , ▁more ▁tram c ars ▁were ▁introduced ▁with ▁only ▁minor ▁differences , ▁number ed ▁ 9 1 6 ▁to ▁ 9 3 5 . ▁ ▁The ▁first ▁class ▁of ▁modern ▁tram c ars ▁( 1 5 ) ▁was ▁equ ipped ▁with ▁t rol ley ▁pol es ▁since ▁the ▁P CC ▁tr ams ▁were ▁still ▁in ▁use . ▁These ▁were ▁subsequently ▁replaced ▁by ▁p ant ograph s ▁as ▁the ▁P CC ▁tr ams ▁were ▁with dra wn ▁and ▁the ▁second ▁group ▁of ▁modern ▁cars ▁was ▁introduced . ▁ ▁The ▁second ▁class ▁of ▁Al st hom - V e vey ▁tram c ars ▁( 2 0 ) ▁are ▁capable ▁of ▁reaching ▁a