3200 series (Chicago "L")

3200 series
Unrehabbed 3200-series cars on the Brown Line.
In service	1992–present
Manufacturer	Morrison-Knudsen
Built at	Morrison-Knudsen Plant, Hornell, New York
Family name	High Performance
Constructed	1992–1994
Entered service	1992
Refurbishment	2015–2017
Number built	257
Number in service	253
Number scrapped	4
Formation	Married pair
Fleet numbers	3201–3457
Capacity	39 seated
Operator(s)	Chicago Transit Authority
Depot(s)	Kimball Yard Midway Yard
Line(s) served	Orange Line - 66 cars      Brown Line - 187 cars
Specifications
Car body construction	Stainless steel with fiberglass end bonnets
Car length	48 feet (14.63 m)
Width	9 feet 4 inches (2.84 m)
Height	12 feet (3.66 m)
Doors	4 per car
Maximum speed	55 miles per hour (89 km/h)
Weight	54,290 pounds (24,630 kg)
Traction motors	4 GE1262A4 per car
Power output	110 horsepower (82 kW) each motor
Electric system(s)	600 V DC third rail
Current collection method	Contact shoe
Track gauge	4 ft 8 1⁄2 in (1,435 mm) standard gauge

The 3200 series (numbered 3201–3457) is a series of Chicago "L" car built between 1992 and 1994 by Morrison-Knudsen of Hornell, New York. 257 cars were built. As of 2017, 253 of them remain in service. The bodyshells of these cars were built by Mafersa, of Brazil, as a subcontractor to Morrison-Knudsen.

The 3200 series was the last of five series of Chicago "L" cars known as the High Performance Family and the last railcars ordered for the Chicago Transit Authority that use direct current motors. Future train orders are using alternating current motors.

The original order for 256 cars was used for the opening of the Orange Line, which needed new cars when it opened in October 1993. The order was completed in 1994. The 3200-series contains many innovations over the previous 2600-series, including solid state computerized (microprocessor) control for much of the cab functions and traction system. Diagnostics are also easier to perform on this series than on previous series. In addition, fluted steel siding is included on these cars for the first time since the 2200-series, in order to reduce graffiti. The series also introduced hopper windows for use in case of air conditioner failure.

Cars 3441-3456 were originally equipped with pantographs for use on the Yellow Line, which was powered by overhead lines until 2004. The pantographs on 3451-3456 were removed in the late 1990s when they were reassigned to supplement the Brown Line, while the rest lost their pantographs when the Yellow Line was converted to third rail power in 2004.

Car 3457 was an additional car built for the purpose of serving as a mate to the 2600-series car 3032, after its mate 3031 had been damaged from a derailment at Wilson station on March 15, 1988. 3032 was renumbered 3458. The pair currently runs on the Brown Line.