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.
A vehicle traveling in a parking lot has established use of the lane and the right of way. A vehicle in a parking space and backing into the lane must yield to oncoming traffic. Therefore, if a vehicle is backing out of a parking space and pulls into the path of an oncoming vehicle that has already established the lane, the vehicle backing would be at fault for the accident. However, if the vehicle which established use of the lane had an opportunity to avoid hitting the vehicle backing out of the space and failed to do so, there could be comparative negligence on both vehicles or on the one who had the opportunity to avoid the accident.
The person backing out I am asuming other person has finished reversing and is leaving if I understood correctly
You are at fault.
both of you for not looking back
Anytime a vehicle is departing private property and entering a road, it must yield the right-of-way to traffic. The liability is with the backing driver until the backing vehicle is fully into the road. The vehicle already in the road must still take all prudent steps to avoid a collision where possible. If either vehicle is operated in an unsafe manner, the liability will be assigned accordingly.
Backing up--it is your fault.
The person driving on the straightaway/ roadway. Backing out of a driveway or parking spot is the same as a stop sign. The right of way belongs to the person on the road.
It will probably depend on who was backing out first. The first one backing should have the right of way. Also the driving laws don't officially apply in private parking lots. The insurance companies will look at the collision based on driving laws though.
The Vehicle that hit you would be responsible for your damages to your vehicle.
In most circumstances, the backing vehicle has the greater duty of care and would be found at fault.
Parking sensors are for the driver to be able to tell a proximity of other vehicles and objects around the car. This is a helpful tool if backing out of tight spaces and places that have a lot of things scattered around the vehicle.
The length for parralel parking is 10 ft. longer than your vehicle... I don't know about the others