> What countries have those laws, and how have they worked out?
Here in Norway the driver is assumed to be at fault, mainly due to the following paragraph:
§ 3. Basic rules for traffic.
Everyone must travel with consideration and be alert and careful so that no danger can arise or damage be caused and so that other traffic is not unnecessarily obstructed or disturbed.
In case there's a major accident, the driver at presumed fault will have their license temporarily revoked right away. However if the investigation showed the driver drove with reasonable care and caution, the driver will usually be exonerated (and thus get their license back).
There's been a few notable cases regarding this, for example one case where a pedestrian crossed the road at night during winter in a poorly lit area, got hit by a a car and died. The driver was found not guilty as the pedestrian had not worn a retroreflectors or similar, thus the driver had no chance to see the pedestrian until it was too late.
However, due to the above, the driver will often get some blame. There's been cases where the driver does not get an involuntary manslaughter charge, but does get punished due to paragraph 3 above. A recent one I recall is this one[2].
[1]: https://lovdata.no/dokument/NL/lov/1965-06-18-4/KAPITTEL_2#%...
[2]: https://www.nrk.no/osloogviken/broytesjafor-frikjent-for-uak...