The problem is that in that case, due to poor training or judgement, the person driving the turning car did not consider themselves solely responsible for the safe operation of the vehicle, they let the driver in the signaling car decide if it was safe.
It’s subtle, but it happens all the time, because we don’t train drivers to think that way.
In my country, we do train drivers to think that way, and then drivers stop thinking that way because they’re lazy.
The difference here is not a conceptual one where drivers don’t understand rationally that they’re respondible for their actions, it’s one of standards and levels of training.
The problem is that in that case, due to poor training or judgement, the person driving the turning car did not consider themselves solely responsible for the safe operation of the vehicle, they let the driver in the signaling car decide if it was safe.
It’s subtle, but it happens all the time, because we don’t train drivers to think that way.
In my country, we do train drivers to think that way, and then drivers stop thinking that way because they’re lazy.
The difference here is not a conceptual one where drivers don’t understand rationally that they’re respondible for their actions, it’s one of standards and levels of training.