Clearly human-run ATC results in situations like this, so the idea that automated ATC could result in a runway collision and should therefore never be implemented is bad.
You obviously wouldn't authorize the bot to do everything, but you could allow it to autonomously call for stops or go-arounds in a situation like this where a matter of a few seconds almost certainly would have made the difference.
Imagine the human controller gives the truck clearance to cross and the bot immediately sees the problem and interrupts with "No, Truck 1 stop, no clearance. JZA 646 pull up and go around." If either message gets through then the collision is avoided, and in case of a false positive, it's a 30 second delay for the truck and a few minutes to circle the plane around and give it a new slot.
If we aren't confident enough in the automation to allow it to make the call for something simple like a runway incursion/conflict (via total automation), augmentation might be worse than the current approach that calls for 100% awareness by the ATC. Self-driving research shows that at level 2 and level 3, people tune out and need time to get back "in the zone" during a failure of automation.
We can probably semi automate runway crossing. Someone mentioned red lights when you definitely cannot cross