Last week I made some runs against a fixed low powered photo radar called Multanova 6F to demonstrate the power of RDR on the STI-R.
Attached see a chart, which shows the different distances from behind (camera facing the rear of the vehicle).
With RDR on, average distance was about 236 feet.
With RDR off, average distance was about 1175 feet.
First two runs with RDR on, last two runs with RDR off.