Bunch of them are, including the entire Washington metro and Muni Metro's Market Street Subway and Twin Peaks Tunnel. Most Mainland Chinese metros and Hong Kong

Bunch of them are, including the entire Washington metro and Muni Metro's Market Street Subway and Twin Peaks Tunnel. Most Mainland Chinese metros and Hong Kong MTR. [1] Given the last two alone I'd say probably. [1] https://en.wikipedia.org/wiki/List_of_automated_train_systems https://en.wikipedia.org/wiki/List_of_automated_train_system...