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Originally Posted by fenwick16
PS: I did a bit of research and I see that some TTC streetcar routes have been made into right-of-way routes such as St. Clair 512 and Spadina 510 - http://en.wikipedia.org/wiki/512_St._Clair, http://en.wikipedia.org/wiki/510_Spadina. These streetcar routes are what many would consider to be LRT instead of traditional streetcar routes that share the street lanes with cars. However, the same concept could be done with buses for BRT (Bus Rapid Transit) routes.
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I think streetcars and LRT have a lot of "soft" advantages over buses that tend to be overlooked when comparing transit options. They're more comfortable, typically electric (quieter and more flexible in terms of energy source), and they are seen as more desirable. They seem to generate more spin-off investment in neighbourhoods. On the Peninsula, I think good streetcar or LRT service would have a much bigger impact on development than higher frequency bus service. Discretionary riders often don't care as much about buses even if they run at high frequencies.
The Toronto comparison is dangerous because Toronto also has a subway system. The streetcars there serve a different purpose and most of the lines are older and do not use the sort of technology that would be used in a new streetcar system in Halifax.
The issue of mixed traffic vs. dedicated right of ways is mostly orthogonal to the choice of which technology to use. Streetcars in mixed traffic are a bit more constrained than buses but buses are also terrible in heavy traffic. When they run in the same traffic as cars but also have more stops they are always going to be worse than private vehicles and their appeal will be limited.
Halifax will only start to have good transit service if some lanes are dedicated exclusively to some form of transit, whether it's buses or trains. Something like the SkyTrain or a subway is likely unaffordable, but I bet a line with a mix of dedicated surface lanes, signal priority, and some short tunnels or overpasses would work out well. As we all know, Halifax also already has many underused rail corridors.