French railway operator SNCF has exercised an option to buy an additional 30 Regio 2N double-deck electric passenger trains from Bombardier Inc. (TSX:BBD.B).

The Regio 2N double-deck electric train units are designed for use in intercity, regional and commuter services.

The order is valued at US$379-million and brings the total number of units that SNCF has ordered to 159, Bombardier announced Monday from Berlin, where its rail division has its global headquarters.

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Bombardier Transportation says the trains will be delivered between June 2016 and April 2017.

Under a 2010 contract, SNCF has the option to order up to 860 trains from Bombardier for the French regions