Carrera track safety zone / Sicherheitszone mit Bande

This is a complete set of safety zone parts with barrier, attachable to the Carrera tracks with these red connectors (check my other designs if you want to print some of these: https://www.thingiverse.com/thing:3046544).

Features:
* Every part can be printed in one piece (include color/filament changes as you like) or print bottom, middle and top separately and glue it together afterwards
* Every part has the same spacing for the connectors as the original tracks, so just connect them with