rbt
Senior Member
I've said it before, but it's most likely that both RER and SmartTrack are project/working names. Much like how the Air-rail Link became the UP Express and Acceleride in Brampton became Zum, there will be a new name once construction is about halfway complete. IIRC someone on here suggested GO ReX (short for Regional Express).
HSR: GO Fast
Inner RER: GO Frequent
Commuter/Outer RER: GO Home?