No, it's another series by Plarail; its gauge is the space where the train wheels are on the normal one. So each piece of normal track can have two lines of trains running on it. That means that some pieces of track like switches needed to be redesigned as well as the trains which are smaller. I don't quite know about the name, but I remember the name was also made by Plarail. The trains usually go by AS-xx and the tracks AR-xx or something like that, but sadly I think it has been discontinued from what I read on BPT.
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