OneCity
Senior Member
It's feasible but not really worth the cost. The tunnels aren't large enough for the LRTs being used on the rest of the TTC network (subway tunnels are ~3.5 meters in diameter, LRT tunnels for the Flexities are ~3.7 meters in diameter), and the platforms in the stations are way too high.
The TTC could adopt some technology that uses both low floors & pantographs, and high floors & third rail. They could also make Sheppard a high-floor LRT. But in either of those cases, it would still need some retrofitting and it would be an orphan technology.
Finding a way to convert the subway stub to LRT is likely the only way we won't see a subway being built here. For reasons you mention and optical reasons of pissing off area commuters and Politicians having to admit to a mistake it will never happen. If the SSE is built, it become even more likely as there is really only one missing chain link to the "belt" which is already heavily supported by locals. Surely it will be another dragged out debated and assaulted by outside opposition until the day it opens. But as long as the funding indicated "LRT" with suspiciously no movement on LRT. I guess one could make the case for it.