Firstly it was a hypothetical. I made that pretty clear.

Second i literally said in my comment that we would need to define was considered unsafe driving so it wasn't overly critical or unjust. So there would be nothing arbitrary about it.

You raise a good point about the revenue becoming budgeted but that is something that would be taken into account if such a system was ever devised. The revenue would have to be spent subsidising safe drivers lower insurance fees and be an acceptable loss in the event that unsafe drivers become safe drivers. At least it should not be considered as profit.

I accept that i know very little about these systems so i cant really talk about how they would work but to be honest if you are more concerned about who profits feom unsafe drivers increased insurance premiums than making roads safe then im not sure you should have a say either.

Also we already have optional black boxes to lower insurance costs in the UK so there is a precedent for this and thst might be a good starting point. They must already be considering the fluctuations in profits for those insurance packages.

Ultimately i was preaenting a hypothetical and i wasnt willing to die on that hill.