video cameras. These cars were painted in the newer TransLink livery appearing on buses at the time. The trains were manufactured and assembled in Sahagun, Mexico, and Thunder Bay, Ontario. An additional 14 ART Mark II second-generation cars were ordered for delivery in early 2010. The first of these trains entered regular service on July 3, 2009. 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). This was a reasonable match to the four-car Mark I trains (~320 passengers), allowing six-minute off-peak service on both branches of the line and three-minute service on the inner portion between Waterfront and Columbia stations, while sustaining a practical operation during peak hours (55 trains in service, with a 108-second frequency between Waterfront and Columbia stations). With the May 2010 fleet expansion of 48 cars to accommodate ridership growth, SkyTrain reconfigured most of the first- and second-generation Mark II cars into four-car trains, which provide more capacity with the same number of trains (55) at the same headway (108 seconds). Bombardier Innovia Metro 300 (ART Mark III) When SkyTrain expanded operations by adding additional train capacity to existing lines (notably the busiest route, the Expo Line), as well as constructing new lines that use LIM rail for propulsion (such as the Evergreen Extension), TransLink placed further orders for Bombardier ART train cars. The construction for Evergreen Extension included the purchase of 28 new cars and an option (which was exercised on December 16, 2016) to order 28 additional cars to increase network capacity. 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 platform length. Extending platform length at existing Expo Line stations was not under consideration as of 2010. The Bombardier ART Mark III model, also known as Innovia Metro 300, is the newest iteration and redesign from the original UTDC ICTS model. Its dimensions are similar to the Mark II, with the vehicles appearing sleeker and having larger windows on both sides of the train, along with redesigned windows and headlights on the ends of the cars. Vehicle capacity was improved through redesigned interior layout, such as the removal of a section of seats. Also similar to the trains used on Canada Line, the Mark III cars have large LED displays on