[Aussie Mike]

We've had speed cameras for years down here. They form a significant part of each state governments revinue income.

The next step they have just taken is to install cameras that measure your average speed. You go past one camera and it checks your speed whilst taking a pic of your licence plate. No problem, I saw it and went past it under the limit. 100KM down the road another one snaps you going past under the speed limit but the computers in the system calculate the time it took you to travel from the first camera to the second camera and calculates your average speed. If that's above the limit you get a fine in the post.

We have a lot of long boring straight freeways down here and you often have to drive a long way to get anywhere. These types of cameras will catch a lot of people unawares.

Cheers