I cannot confirm this but I've heard that there are now fully functional point to point speed cameras on the kwinana/mitchell freeways.
I'm aware that they've been trialling these along with the new 3d laser speed cameras but didn't know they're now working.
Unable to find any official links to back this up, but my guess is that WAPOL will keep it hush hush for a month until they release statistics of how many people have been caught speeding and then carry on about how speed is the biggest killer on the roads.

Anyway, how these new cameras work is say there are two cameras, one is at "point A" the other at "point B"
Point A will see you along with every other car that passes by and record your number plate automatically (it will not detect your speed)
Point B will do basically the exact same thing, BUT it will calculate the time it took you to get from A to B and if it was MORE than the theorteical maximum speed limit allowed it may issue a fine.
That's how I think they work, correct me if I'm wrong

Apparantly these are already operational over east, can anyone confirm this also?