The Transitway's initial sections opened in 1982 and were served at the time by GM TA60-102N articluated buses. These buses were articulated and had the parculiarity of being a cross between a GM New Look (for the sides) and a GM Classic (for the front). OC Transpo had 22 of these buses.
Starting in 1985, they started acquiring the Orion Ikarus 286, which was also known as Orion III (pictured above). By 1988 they numbered 162 in the fleet. They were later joined by an additional 24 ex-TTC buses, that arrived between 1997-1999. The Orion Ikarus served the Transitway for almost 18 years and were retired in 2003.
From 2001 onward, the New Flyer D60LF (pictured above) and later in 2010, the D60LFr have been in service. The D60LF and D60LFr currently number 359 in the fleet.