cont roll ably , ▁sometimes ▁even ▁mel ting ▁sho es ▁rest ed ▁upon ▁them . ▁▁ ▁These ▁problems ▁forced ▁the ▁State ▁Rail ways ▁to ▁introduce ▁a ▁new ▁train ▁service ▁on ▁the ▁line . ▁In ▁ 1 9 9 2 , ▁the ▁Capital ▁Express ▁was ▁introduced ▁with ▁new ▁TV S 2 0 0 0 ▁rail c ars . ▁These ▁new ▁rail c ars ▁had ▁new ▁bog ies ▁with ▁new ▁susp ension , ▁which ▁made ▁jour ne ys ▁more ▁comfortable . ▁Al ong ▁with ▁better ▁susp ension , ▁the ▁rail c ars ▁also ▁had ▁sound ▁ins ulation , ▁air - condition ing ▁and ▁automatic ▁doors . ▁▁ ▁When ▁the ▁entire ▁Ist an bul - An k ara ▁railway ▁was ▁elect r ified ▁in ▁ 1 9 9 3 , ▁the ▁Capital ▁Express ▁was ▁able ▁to ▁operate ▁at ▁greater ▁spe eds , ▁most ▁not ably ▁between ▁ İ n ön ü ▁and ▁E ski ş eh ir . ▁The ▁train ▁became ▁the ▁State ▁Rail ways ' ▁flags hip ▁service ▁until ▁ 2 0 0 9 , ▁when ▁the ▁E ski ş eh ir - An k ara ▁portion ▁of ▁the ▁Ist an bul - An k ara ▁high - speed ▁railway ▁was ▁opened ▁and ▁Y ük se k ▁H ı z l ı ▁T ren ▁high - speed ▁passenger ▁service ▁became ▁the ▁pride ▁of ▁the ▁T CD D . ▁On ▁ 1 3 ▁March ▁ 2 0 0 9 , ▁the ▁Capital ▁Express ▁was ▁short ened ▁by ▁ ▁to ▁E ski ş eh ir ▁and ▁served