The general rule is that it's the moving vehicle that's responsible for making sure that the road is clear. If both vehicles were moving at the impact it gets more difficult. Then it has to be settled who had the right of way.
If they backed into you, it's their fault. Failure to yield.
It is your fault.
You are.
If all conditions are equal: such that both parties signaled and backed up in a 'cautious manner' - then the fault would be 50-50. The amount of damage would have no bearing.
Its logical.........the person who backed out while the other person was at it!
Usually their is no fault associated with parking lots. I'm sure your insurance company looks at it as your fault.
If you are both moving, the one at fault is whoever the police officer says is at fault on the accident report. That's all I can tell you with this information. I hope you called the police. They will say you backed into them and you will say they ran into you. Without a police report faulting one of you, the insurance company will say both are 50% at fault which means each pays for their own damage.
Whomever backed into it is at fault.
Both of you. Neither driver was watching where they were backing. The ultimate fault will be determined based on the police report and an investigation.
the guy who backed offcourse
Technically you are at fault because they had the right of way and you backed into their path.
If your car was already in the street when the other driver backed into you, it sounds like it's more his fault then yours. Unless there's serious damage to your car, the best thing would probably be to treat it as a shared-fault accident. Each driver pay for their own damage. No sense creating animosity with a neighbor over a mistake.