Warning other Drivers about Speed Cameras, its consequences

I hadn't really thought this through properly untill I talked to Pc Ian millington this morning.
These are my thoughts.
Speed limits are put in place because many drivers do not see the potential consequences of their actions. Someone makes an error of judgement, bad luck arrives, you have a child, OAP, a bike, a horse in front of your car. You are going too fast, you are going to collide.
By warning other drivers of radar cameras you are putting off a very important modification of their driving behaviour. You get stopped or get the letter in the post. Its 3 points and a fine.
You think, well do I want any more points? It starts to get serious after 6.
The bottom line is speeders need to learn the hard way.
For their sakes and others.