The SkyTrain is a rapid transit system located in the Metro Vancouver region of the Canadian province of British Columbia, with a number of different models of rolling stock.

[7] The original fleet consists of 12 metres (39 ft 4+1⁄2 in) lightweight Mark I ICTS cars from Urban Transportation Development Corporation, similar to those used by Line 3 Scarborough in Toronto (until its closure in July 2023) and the Detroit People Mover.

The maximum based on station platform lengths is a six-car configuration, totaling 72 metres (236 ft 2+5⁄8 in) The SkyTrain fleet currently includes 150 Mark I trains.

The ends of each car had no doors; instead, the windows were slightly enlarged and the front was equipped with an electric motor driven windshield wiper.

When the 1984/86 fleet of ICTS cars were introduced, floors were carpet-lined, intended as a way to showcase SkyTrain as an elegant world class system.

[citation needed] Between the late 1990s and early 2000s, just prior to the opening of the Millennium Line, SkyTrain gradually refurbished the entire Mark I train fleet in terms of design and layout.

[citation needed] From the beginning of the system's revenue opening in January 1986, SkyTrain operated daytime service with two-car and four-car Mark I trains running at a target five-minute frequency.

[citation needed] At the opening of the second part of the phase two extension to Scott Road station in 1990, six-car trains were used for the first time at reduced frequency while an operation glitch in the system's computer network had to be corrected and re-programmed.

Prior to the opening of the Millennium Line, four-car trains became standard because SkyTrain could operate frequent service (about 150 seconds) during peak hours.

The opening of GM Place (today called Rogers Arena) also brought an increase in the number of special events (hockey, concerts, and the short-lived trial of basketball) which required extended capacity during the evenings.

[11] The refurbishment included an interior and exterior repainting (in the current blue–grey TransLink livery), removal of seats to increase capacity, and the replacement of various systems.

[13] When the Millennium Line was built, TransLink ordered new-generation Mark II ART trains from Bombardier Transportation, 50 of which were manufactured in a Burnaby factory.

[14] Similar trains are used in Kuala Lumpur's Kelana Jaya Line, New York's JFK AirTrain, and the Beijing Airport Express.

Mark II trains have a streamlined front and rear, an articulated joint allowing passengers to walk the length of a married pair, white/grey/blue interiors, and three doors per car.

With the acquisition of the initial 60 larger Mark II cars in 2002, SkyTrain chose to operate most in two-car trains (capacity ~260 passengers).

As part of plans to gradually increase Expo Line capacity, eventual operation of five-car Mark II trains is anticipated to maximize usage of the current 80-metre (260 ft) platform length.

[22] They were temporarily pulled from service pending further testing on September 26, 2016, when one of the trainsets lost power while crossing the Skybridge a few days earlier.

There will be several improvements in contrast to the Mark III trains such as passenger WiFi, information display screens, a new seating layout, bike racks, and an overall increase in reliability.

[34] The order contains an option for the purchase of up to 400 additional cars to support future fleet expansion, replacement, and system extension projects.

[36] Minor construction work was in progress as of February 2023 at select Expo Line stations in order to prepare for the arrival of the first Mark V trains.