The third train presented by Austria's ÖBB is the Railjet M (Rh 4884)

Siemens is developing its first long-distance variant of the Mireo, originally designed for regional transport. The four-car trainset is tailored to ÖBB's requirements and its use on long-distance routes in the Alps. With a top speed of 160 km/h, these trains are the slowest in the Railjet family, but since speeds higher than 160 km/h are never possible on the routes used, this is not a disadvantage. (Exception: Unterinntal Railway Innsbruck - Wörgl)
31 units have been ordered as part of a framework agreement for up to 540 trains. This same agreement also includes an order for 36 three-car and 33 four-car trains for the regional version (Cityjet M), which will have up to 317 seats. Unlike the previous Mireos, these ÖBB trains are slightly wider and have conventional bogies instead of Jacobs bogies.
Technical data and highlights:
• Manufacturer: Siemens Mobility
• Series designation: 4884
• Platform: Mireo
• Maximum speed: 160 km/h
• Train length: 106.05 m
• Seating capacity: 257
• Wheelchair spaces: 2
• Bicycle parking spaces: 14
• Restrooms: 3, one of which is accessible
• Multi-purpose compartment
• Ski and snowboard racks
• Catering zone: Vending machines with snacks and drinks
• Family zone with play area and interactive driver's cab
• Economy and First Class
The Railjet M is scheduled to be deployed on Interregio lines from 2028. The passenger information system indicates that these trains will likely operate under the RJR (RailJetRegio) designation. Initially, the Railjet M is only approved for operation in Germany and Austria, but this is expected to change with approval for operation in Italy and Slovenia, targeted for 2029. This means the vehicles can also be used on a planned InterRegio (IR) line from Salzburg via the Tauern Pass and Villach to Tarvisio Boscoverde. The line is planned to run every 120 minutes and replace the InterCity (IC) trains currently operating there.