Trains Trains Trains on Instagram: "The Legendary Class 303 – Scotland’s Beloved “Blue Trains” 💙 For generations of commuters across Glasgow and the west of Scotland, the Class 303 wasn’t just a train — it was a daily companion. Introduced in 1960, these iconic electric multiple units transformed suburban rail travel with their bold blue livery, bright interiors, and smooth electric acceleration. Built specifically for the newly electrified lines, the Class 303s quickly became known as the “Blu