▁of ▁the ▁ 1 7 4 7 ▁Glasgow - A yr , ▁which ▁runs ▁non ▁stop ▁between ▁P ais ley ▁and ▁Ir v ine ) ▁and ▁most ▁trains ▁call ▁at ▁P ais ley ▁Gil m our ▁Street . ▁ ▁The ▁route ▁is ▁operated ▁by ▁Ab elli o ▁Scot R ail . ▁ ▁History ▁▁ ▁The ▁A yr shire ▁Coast ▁Line ▁consists ▁of ▁lines ▁that ▁were ▁formerly ▁part ▁of ▁the ▁Glasgow ▁and ▁P ais ley ▁J oint ▁Railway , ▁the ▁Glasgow , ▁P ais ley , ▁Kil mar no ck ▁and ▁A yr ▁Railway , ▁the ▁Ar d ross an ▁Railway ▁and ▁its ▁L args ▁Branch ▁extension . ▁ ▁After ▁elect r ification ▁▁ 1 9 8 6 ▁▁ ▁The ▁line ▁to ▁A yr ▁was ▁elect r ified ▁and ▁Class ▁ 3 1 8 ▁electric ▁multiple ▁units ▁introduced ▁by ▁British ▁Rail ▁in ▁September ▁ 1 9 8 6 . ▁The ▁full ▁elect r ified ▁service , ▁including ▁trains ▁to ▁L args ▁and ▁Ar d ross an ▁Har bour , ▁comm enced ▁on ▁ 1 9 ▁January ▁ 1 9 8 7 . ▁These ▁were ▁supp lement ed ▁by ▁occas ional ▁use ▁of ▁Class ▁ 3 0 3 ▁and ▁Class ▁ 3 1 1 ▁EM Us , ▁then ▁in ▁use ▁on ▁the ▁In ver c ly de ▁Line . ▁▁ ▁These ▁EM Us ▁replaced ▁the ▁Class ▁ 1 0 1 ▁and ▁Class ▁ 1 0 7 ▁DM Us ▁that ▁had ▁served ▁the ▁line ▁for ▁over ▁ 3 0 ▁years . ▁Class ▁ 1 2 6