Bordercollie
Senior Member
I don't think jointed track makes the journey any slow ... CN achieved under 4 hours on Montreal to Toronto on jointed track. And I certainly remember riding VIA on jointed track between Montreal and Toronto at full speed ... I have a history term-paper somewhere that shows the difference in my writing between the jointed and welded sections, written on a Sunday night and due Monday!
Though that it's still jointed track suggests that it does need rehabilitating - and that's likely the issue with a speed restriction. Much like the VIA service between Guelph and Kitchener not that long ago.
And London station has the same issue.