Driving condition matter since they vary from place to place. It matters for people, and it most likely matters for autonomous vehicles (either due to training data sets or direct programming of traffic regulations). To choose a mundane example, that is admittedly more likely to affect people, consider how many people try to make a left turn into a (North American) roundabout or who park in a bike lane. (Sometimes it is deliberate, but sometimes it is an out of town person who has never dealt with it before.)

That said, I would expect a San Fransisco decision to be based upon San Francisco data.