Originally Posted by
Neil S
I know a guy who used to install Gatsos (i.e. a very good source) and he said that if they flash oncoming vehicles then they are loaded with a dummy camera. He says that in a live camera the radar is directional i.e. ignores oncoming traffic.
Radar cannot be directional - It sends out a signal, that signal bounces back, and that's how it works out the speed. They just aren't set up to accurately register the speed head on.
Fully functioning cameras can and do flash if you go towards them head on, but you won't get 'done'.