Penfolds11 wrote:
In my personal opinion it is the lack of any clear punishment that is the major cause of careless/dangerous driving, and the fear of being banned for ever would be the most effective punishment for any driver.
Yes, in one sense I agree with that. If the killing of a cyclist merited a minium life sentence (or whatever), motorists might work out for themselves what might prevent such an occurrence. OTOH, in most incidences, the punishment would not be upheld, as indeed it isn't today even though severe punishments theoretically exist (indeed juries would fail to convict at all on the basis that the punishment is inappropriate just as in former times men were spared hanging for the stealing of a sheep).
The reason for this is that the accused would argue, just as they do now, that they did nothing wrong - they drove as they were taught to drive, that all people drive, that they were tested on and which is upheld broadly in the social interpretation of what law there is. Harsh punishment would therefore in their view be just a lottery and bear no relationship to their decision making. Police, prosecutors and juries agree with that and therefore do not punish.