SWISS Federal Railways (SBB) has issued a public tender for the procurement of 116 new double-deck EMUs for use on the Zürich S-Bahn and in French-speaking Switzerland. The contract is expected to be worth “billions” of Swiss francs.

SBB says 95 of the new trains will replace the first-generation double-deck fleet on the Zürich S-Bahn, including the 115-strong DPZ fleet and HVZ-D trains, which are used at peak times. The remaining 21 trains will be deployed on the Vaud RER centred on Lausanne and the RE33 Marigny - Annemasse line.

The contract will include an option for the supply of 84 additional vehicles. Procurement of these is considered essential to operate the additional services foreseen under the federal government’s Expansion Step 2035 for the national network.

The new 160km/h trains will be 150m long, which compares with 100m for the DPZ fleet. They will offer 500 seats each, with more than 1000 seats available on the S-Bahn during peak times when two trains will run in multiple. The trains will be low-floor, feature multi-functional zones for passengers taking short-distance journeys, and will have two toilets, one of which will be wheelchair accessible, as well as dedicated areas for bicycles, luggage and prams.

Potential suppliers have until early 2025 to submit bids for the contract. The preferred bidder will be announced by the end of next year and the trains are expected to enter service in the 2030s.

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