Speed cameras or “blitzers” comes in many forms from older single camera models to modern multi camera systems that do front and back photos. You may often see on coming traffic flashing their high beams at you.
This is a friendly little warning (it is also illegal…) that there is a speed camera set up.
They serve as just a little reminder to watch your speed.
If you really are a speed monster however, get ready for some trouble.
You will probably be in a unknown area and moving with the flow of traffic. I was angry and scared and didn’t know what was going to happen.