R and D

developed by CAF, allows rail vehicles to adapt to any track gauge, traveling in just 3 seconds.

This new rolling system developed by CAF can be applied to any type of train, regardless of its origin or technology.

By replacing old trucks with BRAVA ones, trains presently in service can be transformed into variable gauge wheel set trains and run at speeds of up to 275 Km/h.

The BRAVA system has successfully passed the UIC gauge (AVE) track tests on the Córdoba-Seville line, at a speed of 250 Km/h, and achieved 275 Km/h on the La Sagra-Ciudad Real section.

How does the BRAVA work?

The BRAVA Universal System consists of two sets of wheels that can be preset to shift sideways over a non-rotating axle.

While the train is running, the action of a double safety device prevents the wheels from moving sideways. This device can only be deactivated automatically, at the gauge change stations.

The wheels are separated by means of a blocking-unblocking device, automatically activated during the gauge change process.

Why BRAVA?

The BRAVA Universal System is safe, compared to other high-responsibility component.

In order to develop this advanced system, CAF has used the most modern calculation, simulation and techniques in testing.

Reliable and available in accordance with the most demanding railway standards:

• In designing this system, we have followed the recommendations of the European standard EN 50126 and the American standard MIL-STD-882C, implementing safety management throughout the entire design process.
• Indiscriminately applicable to either concentrated or distributed traction systems, diesel or electric, for all kinds of rolling stock.
• Compatible with the wide range of existing vehicles and technologies: Intercity, regional and tilting trains, passenger cars...