Plarail TOMY Thomas NEW RELEASES

And it also will bump the sides of a Riser if its on a curve.

...and red electric pillars, and trains coming in opposite direction on double track curved rail. 
And bridges and tunnels and city stations J-13, J-26, if loaded with cars.
So it's pretty much useless in any layout that has anything but simple single tracks. Not so great. 

Thanks for the pic, Vio.