Stif plans to order 43 class Z 50000 Francilien single-deck emus, exercising an option from the original contract for 172 trains signed with Bombardier in 2006, and these will be supplied as two batches of 112m and 94m-long trains. The longer trains will be deployed on Line H from Creil to Pontoise (six units) and Line K from Paris to Crépy (18 units) by December 2016, while the shorter trains will be introduced by December 2017 on Line L services from Paris St Lazare to Versailles-Rive-Droit.
The 112m-long trains will seat 470 passengers, while the 94m-long sets will seat 380.
The remaining 48 trains will be Régio 2N double-deck emus, which will enter service on Line R from Paris Gare du Lyon to Melun by December 2018. These 110m-long trains will be a development of the class Z 55500 currently being delivered to French National Railways (SNCF) and each set will seat up to 600 passengers.
The total value of the contract will be around €900m, with the cost of the order split equally between SNCF and Stif.