Innocent bystander wrote on Dec 23
rd, 2013 at 6:01pm:
What change of heart?, I've always looked out for the poor hence my outrage over our arsehole government using them to fix their broken budget.
Tax the rich instead, they have more money.

However, you do have a point that is worthy of discussion. I do not agree with such a hike for the reasons you stated.
We should look a little deeper. The SA state government has recently abolished registration stickers. Victoria did the same this year. They detect unpaid registration with technology that recognises number plates that queries a registration database. I do not know the details of the technology but can make an educated guess as to its likely function which I give below.
1. Camera attached to a computer takes photograph of car (could be a real-time video feed)
2. Computer scans the image to find number plates and read them (which is likely to be quite accurate due to the use of standard fonts and fixed positions)
3. Computer logs the number plate and filters out recent duplicates (a car passing by a camera will be captured several times in quick succession)
4. Computer uses the best guess of the number plate to construct an SQL query to a registration database and obtain the registration status of the vehicle
5. If the car is unregistered it is logged with location, date and time so an infringement notice can be issued
We should find out a few details. What is the cost of this technology? How is it being funded? Where is it being used - police cars, motorways, intersections?
I think the purpose of the tax hike is to act as a strong deterrent against driving an unregistered vehicle. No doubt there's underlying reasons for increasing the penalty for this particular offence. Maybe there's an increase in infringements since the abolition of registration stickers?