SNCF Class BB 27300 the number carried on the locomotive is prefixed with the number 8, to denote the unit as belonging to the Île-de-France division of SNCF. The first locomotives entered service in 2006 on suburban trains from Paris Montparnasse railway station. Current deployment sees a total of 25 locomotives operating services from Paris-Montparnasse on trains to Dreux, Mantes-la-Jolie and Rambouillet. At Montparnasse they have displaced older SNCF Class BB 8500 and BB 25500 locomotives. A further 42 locomotives operate from Paris Saint-Lazare railway station on trains to Poissy, Mantes-la-Jolie, Pontoise, Gisors, and Ermont Eaubonne. At Saint-Lazare BB 8500 and BB 17000 locomotives
SNCF Class BB 8500 SNCF Class BB 8500 The SNCF Class BB 8500 class are part of a series of electric locomotives built by Alsthom for SNCF. They are the direct current version of the 25 kV alternating current SNCF BB 17000 and dual system SNCF BB 25500. The locomotives are fitted with monomotor bogies with two different gear ratios. This allows them to increase their tractive effort in exchange for a reduction in their top speed. This makes them suitable for both freight and passenger trains. They acquired the nickname "Danseuses" (dancers) due to their tendency to sway from side to side at