Diesel horns like this one are closely associated with Thomas and Friends, the long-running children's series about talking railway engines, where a horn blast marks an engine's arrival, departure or warning on the line. Short clips from the show have circulated widely in fan edits, railway compilations and meme videos, where the sound works even without the picture because listeners recognise the railway setting instantly. That instant recognition is why creators still reach for it for entrances, transitions and playful warnings.