What and To whom does good samaritan law apply?

Answer 1

So-called 'good samaritan' laws were written to protect persons attempting to give life-saving first aid at the scene of accidents (vehicular in particular) that inadvertently/mistakenly resulted in either death or great lasting physical harm/impairment to the person(s) saved (i.e.: passerby pulls someone from certain death in a burning car but that same effort results in the person being disabled for the rest of their life.) As long as the treatment given was not proveably criminally negligent then the "aid-giver" is protected from a liability suit.