The current situation is that there are not enough police on the ground - especially traffic police. Parking fines and automatic speed cameras have been taken over by traffic wardens, who measure in the easiest locations (where they expect the most fines), which are not necessarily the most dangerous. All the more serious offences (alcohol, speeding elsewhere, tailgating, wrong way, etc.) go unpunished because there is no policeman to see and punish.
I propose that the money from fines for more serious offences (say those with a prescribed 5 penalty points or more) should be funnelled back into the police force as money for new recruits, and also for salary bonuses for the police officers who are most effective at such punishment.
Limiting it to more serious offences is necessary, because otherwise (i.e. if all the money from all the fines were to flow back to the police) we would end up with a case of "just to find something". This would give us more staff, who would have a greater interest in catching the worst offenders (i.e. those who are the most dangerous in traffic).