the second link are good to explain Montral's commuter train history,but,they forgot to say 3 things
in 1992,a temporary commuter train was in service for the summer,to hepl motorists that they used metropilitan highway,cause it was closed for major refection works..
Temporary commuter train was running over Cn St-Lawrence sub,that going across north of Montreal,to Repentigny and was called "Metropoli-Train"
Was starting at du Collège station,near subway station at corner Decarie boulevard,and finnishing at Repentigny..covering 6 station..
Du-College,Sauvé,Lacordaire Pointe-aux-Trembles,Charlemagne and Repentigny
1995,Montreal / Deux-Montagnes ligne was entirely rebuilted,with new cathenaries and tracks,rollig stock was replaced by brand new EMU trains
Voltage pass from 3000 volts to 25 000 volts
june 2012 Rigaud commuter station was definetly closed,service are stopping now at Hudson
And a new north-east commuter train are in constuction,it will leave Montreal by the tunnel under the mountain and will go east by CN St-Lawrence and Jolliette sub to Mascouche,AMT ordered 20 dual power locomotive,to deserve this new line,but one of the dual mode locomotive derailled last december and they don't use them anymore since that event,cause BST are not hurry to give the final report,that CN and AMT wait for before to put back in service..