I always thought these were neat Subway style curves. Looking closely at your picture, I had always thought that the upper level was made to accept the Tomy Road pieces but I don't see any connectors. So is that upper level made to accept a Blue Track?
I also always thought that these could have also been made stack able and one of my "I wish Tomy woulds" was that they made curved pieces for the R-25 Subway Tunnels.
I also always thought that these could have also been made stack able and one of my "I wish Tomy woulds" was that they made curved pieces for the R-25 Subway Tunnels.
![[-]](https://www.blueplastictracks.org/images/collapse.png)