Here's a proposal for a ~$1B LRT system for London, Ontario:
https://d3n8a8pro7vhmx.cloudfront.ne...PDF?1446664366
The municipality is already in talks with the province and the federal government seems likely to kick in money too. The municipal contribution is only in the $100-200M range.
London and Halifax are about the same size but Halifax traffic seems worse, probably because it's an older city with more challenging geography.
Kitchener-Waterloo already has an LRT system under construction. I think Hamilton might be getting LRT too.