Hi Martin - you're right it isn't an impending problem for humanity. We make a big thing about autonomous cars but our trains are not computerised We're about to spend billions on HS2 however we would be better off spending that money on getting rid of train drivers and developing computer systems to run our trains and railway network. Here in Lincolnshire we have a number of level crossings and a lot of them still have a member of staff in attendance 24x7.
The Docklands Light Railway doesn't have drivers and it's been around for over 20 years. Not in our lifetime...