Westbound at sunrise.
Go 556 approaching Pickering station.
Go 547 in push mode departs Pickering.
Slowing grinding eastwards on the single main Belleville Sub.
VIA heading in to Toronto getting a run in favour of the now late 1630 GO local from Pickering
The engineers track test train at Pickering
Westbound GO train departing Pickering
GO 249 picks up passengers and is on it's way west to Toronto.
I would call this a major transportation corridor!