MP 55
The MP 55 was the second generation of the rubber tired variant of electric multiple units used on Paris's Métro system. The trains were manufactured by a consortium between Renault, Brissonneau et Lotz, and Alstom and operated on Line 11 from 1956 to 1999, when they were replaced by refurbished MP 59 stock from Line 4.
Conception
After the successful testing of the MP 51 on the la voie navette segment (connecting track) between Line 3bis and Line 7bis, the RATP decided to order 71 new train cars to equip Line 11, since the line contained a steep grade. The first train (M.3001-N.4001-AB.5501-M.3002) was delivered beginning on October 1, 1956 and went into service on November 8, 1956, with all 17 trains were in service by October 1957.
Description
The MP 55 was composed of 4 car trainsets, with three of the cars motorized. Originally, the trains were painted in a light blue livery and contained soft fluorescent lighting. Like many trains during the 1950s, the MP 55 trains contained both first class and second class cars.