The way I see it is that light rail and streetcars are technically the exact same thing. Kind of like a metro and heavy rail. Yes different cities have different ways of operating them, but if we define them based on every single minor modification, we'll have a trillion different names all referring to the same thing.
Makes me wonder why you are using the term LRRT. It seems to be just another sub-definition. I have not heard this term defined as how you define it, and your definition seems to be subjective. I heard LRRT being applied to automated light rail systems that have characteristics of a mini-metro. TheDocklands light railway is a good example of LRRT. I did not really want to jump into the terminology debate, but the examples you posted for LRRT seem to fit what you percieve "rapid transit" to be. Which is fine. It's your opinion, but those systems are Light Rail systems and should not be lumpd into a sub-definition. If anything, the St. Louis Metrolink, and Edomonton's systems are the best examples of your definition.
They are the exact technology. Everyone knows that. What makes them different(in terminology) is operating environment, and types of vehicles used. In North America a streetcar is usually a smaller, single vehicle operating in mixed-traffic with little or no signal priority, and closed spaced stops. LRT is usually in a reserved ROW(surface, grade seperated), and utilizes signal priority, has larger vehicles, and is capable of high operating speeds, with stop spacing that can vary but it is usually 500m or or greater.
With that said, obviously there is a difference between the Dundas streetcar and LA's Blue line, which is where the term light rail rapid transit comes in. These systems feature a mix traffic signal priority, exclusive right of ways, well placed stops, rapid boarding, etc. Spadina and St. Clair may have their own right of ways, but that's about it. They do not have their own signal priority, rapid boarding, and stops are placed far closer compared to the subway.
They are the exact technology. Everyone knows that. What makes them different(in terminology) is operating environment, and types of vehicles used. In North America a streetcar is usually a smaller, single vehicle operating in mixed-traffic with little or no signal priority, and closed spaced stops. LRT is usually in a reserved ROW(surface, grade seperated), and utilizes signal priority, has larger vehicles, and is capable of high operating speeds, with stop spacing that can vary but it is usually 500m or or greater.
Again, your opinion, but it seems to me you are trying to frame the definition to suit your opinion.