A UIC study carried out in 2001 reviewed the possibility of developing a common infrastructure for different gauge changeover systems (TALGO, DB/RAFIL Typ V and PKP/SUV). Technical and economic aspects were also to be taken into account. The results showed that two systems (DB/RAFIL and PKP/SUW) are technically compatible but the three systems that existed at the time (and their associated equipment) were not completely compatible. A common infrastructure seemed feasible but would require modifications to the variable gauge wheel sets and the gauge change devices of the existing systems. This study was unable to put forward a simple, cost-effective solution for a common infrastructure for gauge changeover systems.

The purpose of this project is to define the requirements for a gauge changeover system while taking into account existing solutions (CAF Brava, DB-Rafil, SUW 2000, and Talgo) with an emphasis on technical, economic and logistical aspects as well as the benefits for operators and railways. The project is important for development in passenger and freight transport and facilitates interoperability by offering technical solutions to help overcome technical barriers between rail networks with different track gauges.