Those override switches are dangerous enough to have tamper evident seals, or sometimes padlocks. And even if they are to be used, there just must be something mechanical to substitute those systems, most simply and least efficiently by physical tokens(tablets) assigned to each stations. Trains had those systems literally since late 19th century.
Passenger service with just verbal orders over a phone is simply unacceptable.
There was a human override after all trains stopped.
Those override switches are dangerous enough to have tamper evident seals, or sometimes padlocks. And even if they are to be used, there just must be something mechanical to substitute those systems, most simply and least efficiently by physical tokens(tablets) assigned to each stations. Trains had those systems literally since late 19th century.
Passenger service with just verbal orders over a phone is simply unacceptable.