ALSTOM has lodged an appeal with the Swiss Federal Administrative Court after Swiss Federal Railways (SBB) awarded Stadler a SFr 2bn ($US 2.15bn) contract for 286 single-deck Flirt EMUs.

The contract, placed alongside SBB subsidiaries Thurbo and RegionAlps, includes three further options that could take the final number of trains delivered to 510.

SBB says it is unsure whether the appeal will delay the procurement of the 286 trains, or how long any delay will be. The railway says it attached the utmost importance to complying with legal requirements throughout the entire procurement process, including meeting the provisions in public procurement law covering the purchase of rolling stock.

Stadler was selected ahead of Alstom and Siemens following a two-stage tender process launched in May 2020. Under the contract, the new trains are due to enter operation from December 2025 and will gradually replace fleets over the following nine years.

For detailed data on fleet orders from around the world, subscribe to IRJ Pro.