Most examples boil down to common sense. Nobody is going to arrest a 14 year old for driving their dying parent to the hospital.
Similarly, it is reprehensible but legal to pull up a chair and watch a child drown in a pool.
There is a difference between law and morality, and humans will use the second to selectively enforce the former.
In which country? Even for the US I don't believe the law system is that crappy.
In the case of a child in a pool, the difference is a matter of degree. What if I am terrified of water myself? Does that justify my inaction? What if I just "froze", which is common in stressful situations. Does anything justify not doing something?
For example, how fast can I drive to get to a telephone if I don't carry one or otherwise cannot use it?
The difference is that German law is more systematic and includes a general duty to rescue, but this doesn't result in excessive negligence charges, as awards are much smaller.