Russian Railroads Insert: - Rules of Play says:
This insert is designed to be compatible with Russian Railroads®, and includes space for the German Railroads® expansion. The design provides both efficient storage and improved game play. Many of the trays can be utilised during the game, and they greatly aid set-up and clear-away times. The boards and player boards act as a lid on top of the trays. All cards can be sleeved. There is also space in the insert for the Russian Railroads: Mini-Expansion®.