I have been in almost exactly the scenario you described as vehicle A. I came up to an intersection and my view was occluded by a car parked to my right in a no

I have been in almost exactly the scenario you described as vehicle A. I came up to an intersection and my view was occluded by a car parked to my right in a no parking zone. There also was a gradual bend in the road a few hundred feet to my right. I looked right, then left and started creeping out. I then saw that there was a car barreling towards me that I couldn't see (because they weren't visible when I first looked right). By the time I saw them I couldn't stop fast enough to prevent being hit. But he barely hit the passenger quarter panel and the skid marks were completely straight which is to say that I was barely in his lane and had come to a complete stop when hit. I did mess up by not creeping slightly slower but the driver who hit me had far better visibility (I checked from that perspective). I am almost certain they were going too fast for the roadway and may not have been fully paying attention. I didn't just blast through. I was creeping out at very low speed. An attentive driver would have seen me and taken evasive action and/or honked. The third party that had illegally parked obstructing my view can and drove off while we were sorting out the wreckage. In my shock, it took weeks before I realized that they had also contributed significantly but I had no proof since they'd just driven away. I was considered fully liable for the crash since I had entered the roadway without the right of way. I accept that I made a small mistake. I understand why the insurance people made that determination. But it still burned to be considered fully at fault considering all the other mistakes (including bad road design) that contributed. I will bet though that driver B in my crash felt that I was completely at fault and might have described it exactly as your mother did her accident. In his case, I think he likely would have been leaving out his role in not paying attention and driving too fast. There can be more nuance even to seemingly cut and dried cases.