'What say you? '

Its what say the sign on your cul de sac ! If it says 'no parking when
snowfall is 2" or more'....then its illegal to do so and if you backed
into an illegally parked car, the legal system would most likely favor
you. However, if there is no sign on your cul de sac...then anyone of
your neighbors can park on the street by the curb regardless of their
reason for doing so...which makes you at fault for not looking closer to
see what vehicles are possibly close to your driveway. Before you get
into your car early in the morning....have a look at the bottom of your
driveway so you know whats out there .