▁based ▁on ▁G PS ▁locations ▁of ▁bus es . ▁ ▁Dublin ▁also ▁has ▁a ▁comm uter ▁rail ▁system , ▁one ▁of ▁five ▁sub urban ▁rail ▁networks ▁on ▁the ▁island . ▁The ▁system ▁uses ▁dies el - power ed ▁trains ▁and ▁an ▁elect r ified ▁line . ▁There ▁are ▁four ▁main ▁lines , ▁designated ▁Northern ▁Comm uter , ▁Western ▁Comm uter , ▁South ▁Eastern ▁Comm uter , ▁and ▁South ▁Western ▁Comm uter . ▁The ▁trains ▁are ▁operated ▁by ▁I arn ród ▁É ire ann . ▁ ▁The ▁Dublin ▁sub urban ▁network ▁also ▁consists ▁of ▁an ▁elect r ified ▁line ▁Dublin ▁Area ▁Rap id ▁Trans it ▁that ▁serves ▁the ▁Dublin ▁bay ▁comm uter ▁bel t . ▁▁ ▁Northern ▁Comm uter ▁– ▁Dublin ▁Pear se ▁to ▁D und alk . ▁ ▁South ▁Eastern ▁Comm uter ▁– ▁Dublin ▁Con n olly ▁to ▁W ex ford / R oss lare ▁Euro port . ▁ ▁South ▁Western ▁Comm uter ▁– ▁Dublin ▁He ust on ▁to ▁K ild are . ▁ ▁Western ▁Comm uter ▁– ▁Dublin ▁Pear se ▁/ ▁D ock lands ▁to ▁Long ford . ▁ ▁Dublin ▁Area ▁Rap id ▁Trans it ▁( D ART ) ▁– ▁Gre yst ones ▁to ▁How th / Mal ah ide . ▁ ▁There ▁is ▁also ▁a ▁tram ▁network ▁called ▁L U AS ▁consisting ▁of ▁two ▁lines ; ▁ ▁Red ▁Line : ▁T all ag ht ▁to ▁The ▁Point ▁and ▁S ag gart ▁to ▁Con n olly ▁ ▁Green ▁Line : ▁Bro om bridge ▁to ▁B ride ’ s ▁Glen ▁ ▁As ▁of