The Montreal Metro opened in 1966 and its rubber-tired trains quickly became known for a distinct sound unlike steel-wheel subways. The recording captures that signature departure noise that, according to riders, remained familiar for around 50 years as generations used the same system daily. Clips of the sound circulate among transit enthusiasts, expats, and editors who want a specific city, not a generic train effect. Its appeal is recognition: a few seconds places a scene unmistakably in Montreal without explanation.