This made me think - and excuse my ignorance if this is a known and solved problem already - that for autonomous driver software there needs to be some signific

This made me think - and excuse my ignorance if this is a known and solved problem already - that for autonomous driver software there needs to be some significant degree of customisation allowable for local conditions, where 'local' seems to need to be 'in a local area, like the Bay Area' for example, not just country-wide right-of-way and correct side of road rules. Here in South Australia public transport buses are extended unofficial better right of way standing (when departing from the curb), for example. There are also new laws determining the required minimum passing distance between a cyclist and a car to be 1m if travelling 60km/hr or less, and 1.5m if travelling > 60km/hr; and car drivers are allowed to cross double-white lines to avoid cyclists. It seems to me there are ample opportunity for 'edge case' bugs to occur in the autonomous vehicle software when local conditions are taken into account, and an untested set of requirements are applied specific to a country / city / district.