▁the ▁Detroit ▁region . ▁ ▁Al ong ▁with ▁o vers ight ▁and ▁coord ination ▁respons ib ilities ▁for ▁the ▁Detroit ▁Department ▁of ▁Transport ation , ▁Sub urban ▁M ob ility ▁Author ity ▁for ▁Regional ▁Transport ation , ▁ ▁Ann ▁Ar bor ▁Area ▁Transport ation ▁Author ity , ▁and ▁the ▁Detroit ▁Transport ation ▁Corporation , ▁the ▁authority ▁was ▁also ▁established ▁to ▁create ▁a ▁single ▁mass ▁trans it ▁plan ▁for ▁the ▁region , ▁including ▁the ▁development , ▁fund ing ▁and ▁operation ▁of ▁rapid ▁trans it ▁along ▁four ▁major ▁cor rid ors ▁in ▁the ▁metropol itan ▁area . ▁The ▁new ▁plan ▁used ▁as ▁its ▁basis ▁the ▁Com pre h ensive ▁Regional ▁Trans it ▁Service ▁Plan , ▁which ▁was ▁adopted ▁on ▁December ▁ 8 , ▁ 2 0 0 8 . ▁ ▁The ▁R TA ▁chose ▁H NT B ▁to ▁assist ▁in ▁the ▁development ▁of ▁the ▁Regional ▁Master ▁Trans it ▁Plan ▁in ▁ 2 0 1 5 . ▁ ▁Mass ▁trans it ▁The ▁R TA ▁does ▁not ▁operate ▁any ▁mass ▁trans it ▁services , ▁itself , ▁but ▁has ▁coordin ated ▁one ▁service ▁brand . ▁ ▁Bus ▁service ▁Ref le X ▁was ▁a ▁limited - stop , ▁cross - count y ▁bus ▁service ▁which ▁started ▁operation ▁on ▁Labor ▁Day ▁week end ▁ 2 0 1 6 . ▁ ▁The ▁service ▁consisted ▁of ▁a ▁route ▁on ▁Wood ward ▁Avenue ▁operated ▁by ▁D D OT ▁connecting ▁the ▁Som erset ▁Collection ▁in ▁T roy ▁in ▁Oak land ▁County ▁and ▁Dow nt own ▁Detroit , ▁and ▁two ▁routes ▁on ▁Gr ati ot