Rainforest
Senior Member
Jane Street is one of the densest corridors in suburban Toronto, and as you've pointed out it has amongst the highest bus ridership. If we're building a northwest subway line to serve the most people, straight up Jane Street is where it should go. Jane would also be the easiest route to intensity with transit oriented development However as we get closer to Steeles, we'll see increasing route duplication with the TYSSE, when we could have otherwise spread out transit coverage around northern Etobicoke.
Another option would be to have the line travel towards Rexdale. However that area of the city is lower density, and would likely less less ridership than a line on Jane street. This would also leave large parts of Jane Street (again, one of the busiest bus corridors) without higher order transit.
Or we could take a page out of Vancouver's playbook, and build this elevated line with branches. One branch on Jane towards Steeles, and the other towards Rexdale. Northern Etobicoke would go from having some of the worst transit coverage in the city, to having some of the best.
If the funding is in short supply (usually it is), then I think I'd go for Rexdale at the end. For example, the new Light Metro line could run along Dundas through the downtown, then cross Bloor at Dundas or at Keele. Continuing north-west, the line could hit Jane at Annette or at Dundas (can't hit Jane&Bloor because the High Park grounds would be in the way). Then it could turn up Jane and continue north until it hits the Black Creek interchange. That section along Jane would be underground rather than elevated (the street is not too wide).
And then it could run in the Black Creek and 401 corridors into Etobicoke, then turn up Kipling and possibly continue all the way up to Steeles. The Black Creek and 401 sections could be at-grade with bridges over the obstacles, while the Kipling section would be tunneled or elevated.
That leaves gaps on Jane from Bloor to Dundas, and from Lawrence to Stelees. The northern gap could be filled with an LRT or BRT (the width is mostly sufficient for 6 lanes). The small gap in the south would have to do with a regular bus.
On the other hand, if the deficit-based funding of transit continues for a long time, then the second Light Metro branch, elevated over the northern section of Jane, may be doable. Or you can even have 2 separate lines, one from Rexdale to downtown, the other serving Jane from Steeles to Bloor, both lines sharing the tracks between Dundas and Lawrence.