Greetings From WA (Western Australia) REVNURAZR

[winterbrew]

Yeah, unfortunately you don't have many rear mounting options available there.

We heard before from somewhere, that they are typically set up to sample around 0.8m above the road. Until you get an infringement photo back with the short horizontal sampling line on showing where it took the reading from, you can't be certain.

Mine are higher up and more widely spaced, at 35 deg, and I also have a centre head (running 3 on the back).

Which lane did you use - lane 1 (the inside left) is the trickiest, at it pretty much blasts you at minimum range. The trigger points on the outer lanes are further down the road.

Another option, if you run 3 rear heads, is to install one of the heads on the passenger side door mirror, so this gives maximum detection warning, as this point of the car passes the scanning beam before the rear