The GO Transit rail system in Ontario, Canada, is currently 59 years old, having officially launched on May 23, 1967. It was Canada's first specially designed commuter rail system and began with a single line along the Lake Ontario shoreline (the Lakeshore line) between Oakville and Pickering. In its early days, GO used "Hawker Siddeley" single-deck cars, but the iconic "Bi-Level" coaches (the green and white double-decker trains we see today) were introduced in 1978. As of 2026, the GO train network has evolved into a massive regional backbone with seven lines and over 60 stations. While the "system" is nearly six decades old, the actual trains in service today are much newer; Metrolinx has been engaged in a massive "GO Expansion" project throughout the 2020s, which includes the introduction of electric trains (EMUs) and the refurbishment of the existing diesel fleet to provide 15-minute two-way service. So, while the brand is a "boomer" in age, the technology is rapidly moving toward a high-frequency, modern European-style rail experience for the Greater Toronto Area.