MP 73

MP 73
MP 73 on an outdoor segment of Line 6
Interior of the MP 73
In service	1974–2024
Manufacturer	Alstom
Replaced	Sprague-Thomson
Constructed	1974
Refurbished	1998–2002
Scrapped	2021–present
Number built	250 cars (50 trainsets)
Successor	MP 89
Formation	4 or 5 cars per trainset
Operators	RATP
Lines served
Specifications
Train length	4 cars: 60 m (196 ft 10 in) 5 cars: 75 m (246 ft 1 in)
Car length	15 m (49 ft 3 in)
Width	2.45 m (8 ft 0 in)
Doors	4 pairs per side, per car
Maximum speed	70 km/h (43 mph)
Traction system	Resistor control with JH camshaft
Traction motors	Alsthom Type MP4
Power output	1,320 kW (1,770 hp)
Acceleration	3.5 km/(h⋅s) (2.2 mph/s)
Deceleration	4.5 km/(h⋅s) (2.8 mph/s)
Electric system(s)	Guide bar, 750 V DC
Current collector(s)	Contact shoes, side running on the vertical face of the guide bars
Braking system(s)	Rheostatic, disc
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge, with running pads for the rubber tired wheels outside of the steel rails

The MP 73 (French: Métro Pneu appel d'offres de 1973; English: Rubber-tyred metro ordered in 1973) is rolling stock on tires for Paris Métro Line 6. Put into service in 1974, it is similar to the MP 59 performance-wise, with the appearance of MF 67. It originally wore a dark blue livery called Bleu Roi (King Blue) but has since been repainted with the standard RATP livery. It constitutes, after the MP 51, the MP 55, and the MP 59, the fourth Parisian generation of rubber-tired metros.

This is the only type of rolling stock in the Paris metro for which all the trains on the market have been put into service in the space of just one year.

In some cases, trailers of an MP 73 would be paired with trailers of an MP 59, creating a hybrid formation. This practice ended in 1999 when the MP 55 and many MP 59 stock were retired following the arrival of the MP 89.

The MP73 is currently being replaced by the MP 89 on Line 6.^[1]

Santiago Metro has a forked version named NS 74. The Mexico City Metro has another forked version named MP 82.