Meanwhile there are many places with on-person operation already (and for years): * https://en.wikipedia.org/wiki/One-person_operation https://en.wikipedia.org

Meanwhile there are many places with on-person operation already (and for years): * https://en.wikipedia.org/wiki/One-person_operation https://en.wikipedia.org/wiki/One-person_operation And even zero-person operation (GoA4): * https://en.wikipedia.org/wiki/List_of_driverless_train_systems#Grade-of-Automation_4_systems https://en.wikipedia.org/wiki/List_of_driverless_train_syste... * https://en.wikipedia.org/wiki/Automatic_train_operation https://en.wikipedia.org/wiki/Automatic_train_operation