both
If you are driving the backing car, no matter WHERE the other cas is located, YOU are the one at fault if you collide with it.
The person backing out I am asuming other person has finished reversing and is leaving if I understood correctly
take it easier on the clutch as your reversing
Car A is at fault b/c Car B has the rightaway.
When he causes the accident
The two best driving games are Parking Mania and Central Parking.
If he was driving forward past his intended parking space to take yours, then he is at fault. Cutting across is not permitted in parking lots although many people do it anyway.
The reversing light cable on a 2006 Audi A4 2.0 TDI S-Line for attaching parking sensors is typically colored white. This wire is responsible for activating the reversing lights when the car is put into reverse gear.
The benefits of having a car reversing camera are being able to have a better overview when parking the car. This enables the driver to park the car without colliding with other cars or objects in the way and to assume an efficient parking position.
Usually the driver of the vehicle at the rear, as he/she should be paying attention to what is ahead of them. If you saw him/her reversing out you should have stopped and waited. If you did and were stationary, then the person reversing out is at fault, but you would need witnesses to prove it.
Police