Rainforest
Senior Member
I would think that adding 5 underground stations (it typically costs what, $100 million per station?) to the existing line and converting all the tracks would probably be just as expensive as extending the line to say Warden.
Exactly.
Perhaps the Sheppard rail transit should have been built as LRT from the beginning, placing the Downsview-Kennedy section underground for speed and better branch-ability, yet offering a transfer-free ride from places further east.
But after 40% of that section has been implemented as HRT subway, it makes more sense to extend same technology to Kennedy in the east and Downsview in the west. The shortcut between the Yonge subway line and the Wilson yard will be an additional benefit.