Driverless trains are still only used on a minority of railways, and typically only on networks specifically designed for them. I would be very hesitant to supp

Driverless trains are still only used on a minority of railways, and typically only on networks specifically designed for them. I would be very hesitant to support driverless buses with the currently available level of artificial intelligence: buses run on roads of various surfaces and dimensions, navigate around unpredictable diversions and share traffic with hundreds of other road users in a frighteningly complex system. Plus, even once you've designed a system that can do all that safely, you'll still need staff on board if you want to collect fare revenue.