Never seen anything like that before, aside from the usual red loop part.
What's stranger still is that there's only the one plastic ridge line thing down the middle Usually there's two, which create that space between the two areas where the wheels go. If these spaces have particular names, I don't know 'em.
Curious... is there any 'TOMY' branding on the piece?
That looks extremely outlandish. How is a long train supposed to clear it properly?
Now that I'm looking at it, it also doesn't have the traction 'racks' that the current track type uses. I also remember some mysterious pieces that caused problems on a layout and were mistaken for a knock off type, but were actually an older style of 'real McCoy' track. This part looks like it might have that same sandpaper-like surface.
That loop sure seems familiar to me. Not in discussion but I think I have seen it. That red girder bridge I have seen quite a few of in the Japan auctions, in fact I think I have bid on some. Maybe it was also on AliExpress which, if I did see it there, its a good chance its a knockoff but I am not so sure.
I am curious to see more of the loop when you receive it. Maybe it was part of a particular trick set. Just looking at it makes me wonder it any train of considerable length would make the turn without eventually derailing but maybe the design helps that out. The entrance and exit parts bulge out and at the top of the loop the center rail splits. Could these be to help get the train through with out derailing. I also agree with Dalagstanator that, if it is Tomy, it probably is the older version.