▁line ▁is ▁served ▁by ▁Am tra k ▁N ortheast ▁Regional , ▁Maryland ▁Area ▁Regional ▁Comm uter ▁( MA RC ) ▁P enn ▁Line ▁trains ▁and ▁local ▁bus es . ▁Loc ated ▁just ▁south ▁of ▁the ▁East ▁Coast ▁Green way , ▁the ▁city ▁has ▁access ▁to ▁a ▁walking ▁and ▁b ik ing ▁trail ▁network ▁linking ▁the ▁major ▁cities ▁along ▁the ▁U . S . ▁east ▁coast . ▁ ▁Local ▁transport ation ▁The ▁city ▁of ▁Aber de en ▁is ▁part ▁of ▁the ▁Har ford ▁Trans it ▁LIN K ▁public ▁bus ▁system . ▁Rout es ▁ 1 ▁( Green ▁Line ), ▁ 2 ▁( Blue ▁Line ), ▁ 3 ▁( Sil ver ▁Line ) ▁and ▁ 5 ▁( Te al ▁Line ) ▁connect ▁Aber de en ▁with ▁Hav re ▁de ▁Grace , ▁Bel ▁Air , ▁Edge wood , ▁Jo pp at ow ne ▁and ▁Perry ville . ▁Route ▁ 4 ▁( Y ellow ▁Line ) ▁is ▁the ▁Aber de en ▁Cir cul ator ▁which ▁services ▁the ▁different ▁neighborhood s ▁within ▁the ▁city ▁of ▁Aber de en . ▁ ▁Government ▁Since ▁its ▁incorpor ation ▁as ▁a ▁city , ▁Aber de en ▁has ▁had ▁a ▁council - manager ▁form ▁of ▁government . ▁The ▁Mayor ▁and ▁Council ▁are ▁elected ▁to ▁four - year ▁terms ▁in ▁November , ▁with ▁terms ▁beginning ▁in ▁November . ▁The ▁Mayor ▁and ▁Council ▁define ▁policy ▁and ▁appoint ▁the ▁City ▁Manager ▁who ▁may ▁be ▁dismiss ed ▁at ▁any ▁time , ▁by ▁vote ▁of ▁the ▁Council . ▁The ▁City ▁Manager , ▁with ▁the ▁appro val ▁of ▁the