I believe the main reason for raising the dollar factor is that the current fines are not a deterrent, most people who flaunt the law are the ones who have the most money, ie lawyers, mine workers. What with the current economic boom most are saying psst to 150 fine I earn that in 10 mins.

Even in the NSW where fines are hefty, people still speed and break the law, so no matter how high the fines, people still believe it wont happen to them and still get pissed off at the coppers for pulling them over.

As the cops on this forum have already stated don't offend, no lose of points or dollars AUS.

Disclaimer: I occasionally speed, but not by much