i ▁Category : Rep ublic an ▁Party ▁United ▁States ▁sen ators ▁Category : Pe ople ▁from ▁Gran ite ▁City , ▁Illinois ▁Category : 2 0 th - century ▁American ▁polit icians <0x0A> </s> ▁The ▁D ent on ▁County ▁Transport ation ▁Author ity ▁( D CT A ) ▁is ▁the ▁trans it ▁authority ▁that ▁oper ates ▁in ▁D ent on ▁County , ▁Texas . ▁It ▁oper ates ▁bus ▁service ▁in ▁three ▁cities ▁within ▁D ent on ▁County , ▁as ▁well ▁as ▁the ▁A - train , ▁a ▁regional ▁comm uter ▁rail ▁line ▁to ▁Car roll ton . ▁ ▁History ▁D CT A ▁was ▁created ▁by ▁House ▁Bill ▁ 3 3 2 3 , ▁under ▁Chapter ▁ 4 6 0 ▁of ▁the ▁Texas ▁Transport ation ▁Code , ▁approved ▁by ▁the ▁ 7 7 th ▁Texas ▁Legisl ature ▁and ▁signed ▁into ▁law ▁by ▁the ▁Governor ▁in ▁ 2 0 0 1 . ▁On ▁November ▁ 5 , ▁ 2 0 0 2 , ▁the ▁vot ers ▁in ▁D ent on ▁County ▁approved ▁the ▁confirm ation ▁of ▁D CT A ▁by ▁ 7 3 %. ▁The ▁D CT A ▁Board ▁of ▁Direct ors ▁represents ▁every ▁ge ographic ▁area ▁of ▁the ▁county . ▁ ▁In ▁ 2 0 0 6 , ▁D CT A ▁absor bed ▁LIN K , ▁the ▁mass ▁trans it ▁service ▁operated ▁by ▁the ▁City ▁of ▁D ent on ▁since ▁ 2 0 0 2 . ▁LIN K ' s ▁bus ▁routes ▁were ▁absor bed ▁into ▁D CT A ' s ▁local ▁D ent on