smallspy
Senior Member
It was for reliability, but it had nothing to do with the F59s or their age. If they were able to, they would have run 2 MP40s on those runs.They used 2 for reliability due to the age of the F59 locomotives.
The idea was that the run was so distant from GO's core network that it would have taken hours and hours to get support out to rescue a stuck train. So, the hope was that by using two locos that the second could limp the train somewhere convenient, or even to the end of the line if need be.
Of course, this doesn't take into account issues that have arisen and that would preclude the second loco from being useful to limp the train along.
Dan