ADKM:So the bottom line is its revenue gathering under the guide of road safety.
I don't fully agree or disagree with that statement, as there IS a relationship between speed and road safety which needs to be enforced.
What I would however prefer to see is a system where by the punishment increases not only based on speed, by frequency of offense.
For example, if you get pinged for the first time at up to 10km over the limit, you simply get a nice warning letter in the mail, perhaps with pamphlet on the impacts of speeding. Second time you do it within a set time frame (Say, 5 years), you get a small fine (The current $30). The third time you do it, it's a $200 fine. Fourth time it's a $2000 fine or suspension.
This way, the majority of us who stick to the speed limit but make the occasional mistake and aren't overly drivers get a gentle reminder, but not a hit in the pocket, while those who feel that speed limits generally don't apply to them (and are more risky drivers) are hit harder.
That way it becomes more about safety than revenue.