So as far as safety is concerned,, Single drive trains fall somewhere between,,,
A runaway train with no driver
A stationary roadside tourist attraction locomotive.
“When it comes to safety, automation will enable us to make the next step change by reducing exposure to harm, removing the variable element of human behaviour managing important controls and making better use of our unique talents as human beings.”
But but... imperfect humans with no rail experience create the software and design the hardware. By removing the human with the environment experience and knowledge,,
or How are your truly removing the imperfect human equation???