If you're backing out of a road-side parking spot, or pulling through a stop intesection in which only you had the stop sign, or merging onto a highway from a feeder road, or pulling out of a gas station...
Just because you "didn't see him" and "he hit [you]" doesn't mean that you're not at fault.
Yes, it did come as a surprise, didn't it?
That was the problem. Prepare for your liability insurance rates to go up.
Please stop arguing-- it's really, really hot, and my vest is itchng under this midnight blue uniform; I might be getting cranky enough to go sit in my air-conditioned car to cool off. And if I have to do that, I'm going to get my ticket book out.
That is all.