>>1093990Means trolley would have tended to mean more of an interurban type of large railroad carriage. I think, back in the boom (the bubble really, and the burst was when 6000 km of electrified urban rail got unceremonially dismantled) years these were manufactured a lot by the various independent railroad carriage manufacturers, by sticking GE-supplied power electronics into them.
Meanwhile, streetcar would have drawn its heritage from the originally horse drawn town tramways, so these systems tended to serve very locally, and had reduced loading gauge for all sorts of reasons, from a single pair of horses simply couldn't pull a larger carriage to the said two axle carriages needing to nudge through 30 ft radius curves.
Red cars = trolley
Yellow cars = streetcar
As I said, this is most a tendency in language use, and the terms are interchangeable; making them strictly mean either is a modern retcon in attempt of classification of mostly historic things.
But these are factoids filtered across the ocean, so take them with a grain of salt.
