EnviroTO
Senior Member
Edit: There is also the possibility that a main station could be built at T1 that would see GO/VIA/and Blue 22 service. Since GO and VIA are likely only going to want to make one stop at Pearson they would have little interest in a second station at T3. But Blue 22, as was in its original plan, would have an interest in such a station.
I don't believe that is correct. I'm fairly certain Blue22 was/is only going to have a single station. The GTAA reserved some space for Blue22 and initially the plan was for the airport rail station to be at the Long Term Parking station area but was moved to connect directly with the T1 people mover station. You can see those two options in the older and newer GTAA master plan. The diversion option was laid out in an earlier study by URS if I recall correctly. It is probably on the Weston Community Coalition website somewhere.
I can't see GO/VIA making use of the station without the diversion or monorail/peoplemover option because the time required to switch train directions and in the case of VIA the need to ensure controls and both ends of the train.