Seriously, the easiest way:
You could also try Google image search.
Yes, blocking the sidewalk is illegal and if it is over the sidewalk it is not legally parked in your driveway.
I parked my car in the driveway
What type of driveway? Was it a curving and could not see the car before rounding the curve? Is it straight; then why did you not see the car blocking the driveway before even getting into car and/or backing..
If someone hits a parked car then they are automatically liable.
its not
If you reverse your car and then collide with a parked car , the person who did the reversing is at fault.
The car in motion is ALWAYS at fault when it hits a stationary vehicle.
No its not illegal to have it parked out of motion but if you were to be driving then yes it is
Example sentence - I parked my car in the driveway each night.
The person who is backing out of the driveway is completely at fault. Even if the other party was illegally parked, the driver of the other vehicle has the responsibility to look behind them for clearance.
It is the person who is blocking the private driveway's fault because they should have known not to park in front of a private driveway in the first place. However, if the private driveway is not marked with a sign of some sort to let people know that it is private, it may be the driveway owner's fault.
The person backing up can be held accountable, since he is responsible for knowing what is in his line of backing. However, you can also be held responsible for blocking his driveway, this is considered a safety hazard. Most city ordinances have laws against parking on sidewalks and blocking private entranceways and driveways. So, you both could be in trouble but the car blocking the driveway will be cited with stiffer fines. Note that most states have some form of comparative negligence in analyzing cases like this. It is likely that the vehicle blocking the driveway would be assigned some level of negligence for blocking the driveway. However, it is probable that the majority (if not all) of the negligence would be assigned to the person backing out of the driveway, because his vehicle was in motion and he is supposed to be aware of its direction and speed of travel and any potential hazards it may encounter in its path. If I had to make a guess, negligence might be assigned 90/10 or 80/20. Depending on the jurisdictions form of comparative negligence, any damages would be split accordingly.