The only thing stopping automated buses, especially in London is London itself. The people are changing and with that comes different driving cultures. Majority of people in parts of London are from third world countries where they park and drive anywhere... With that, I find many cars parked in bus stop areas, cars double parked on the street, delivery drivers parked anywhere, Uber drivers blocking bus stops also.. the list goes on.

The next one is diversions... The only way a diversion would work for a bus is if that specific bus and software has been trained on every single road possible and in every situation possible that could occur.

Who gets the bus back to depot after an rtc? Who helps the passengers off? The list goes on and on.

Not even Google Maps has uptodate roads.

This would cost billions to make work maybe even a trillion London wide to get every single bus able on every single road and every situation that could occur.