MF 88

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MF 88
MF 88 trainset at Louis Blanc station on Line 7bis.
Interior of MF 88 trainset
In service	1993–present
Manufacturer	GEC Alsthom, Faiveley, Renault, ANF
Replaced	Sprague-Thomson
Constructed	1990–1992
Scrapped	2013
Number built	27 cars (9 trainsets)
Number scrapped	3 cars (1 trainset)
Successor	MF 19
Formation	3 cars per trainset
Capacity	425 people per trainset
Operators	RATP
Lines served
Specifications
Train length	45.44 m (149 ft 1 in)
Car length	15.15 m (49 ft 8 in)
Maximum speed	Design: 80 km/h (50 mph)[1] Service: 70 km/h (43 mph) (Initial) 40 km/h (25 mph) (Current)[1]
Traction system	GEC Alshtom GTO-VVVF
Traction motors	3-phase AC induction motor type 4ELA 2552
Power output	840 kW (1,130 hp)
Deceleration	0.9 m/s2 (2.0 mph/s) (Service) 1.1 m/s2 (2.5 mph/s) (Emergency)[1]
Electric system(s)	Third rail, 750 V DC
Current collector(s)	Contact shoe
UIC classification	Bo'Bo'+2'2'+Bo'Bo'
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The MF 88 (French: Métro Fer appel d'offres de 1988; English: Steel-wheeled metro ordered in 1988) is a steel-wheel variant of electric multiple units used on Paris's Métro system. RATP contracted a consortium of manufacturers, with Ateliers du Nord de la France in charge of the project.

They were built following successful tests of a prototype train-set called the "BOA", derived from the MF 77, which tested new features such as open gangway connections between cars to improve passenger distribution and special bogies to reduce friction caused by the sharp curves found in the Métro network. The MF 88 introduced a number of innovations in its time, including AC induction motors and an on-board computer system using a new standard integrated computing architecture.^[2][3] It is planned for the MF 19 rolling stock to replace the MF 88 in 2025.^[4]