Shower thought: Rather than traffic speed signs telling drivers how fast they are going, they should post what the consequence is for their current speed.
It might be more effective for the sign to read "4 points + $280 fine" instead of "80km/h" when you're in a 40km/h zone, no?
You might be right, as evidenced by how common drunk drivers are. It's like the risk of financial penalties is more of a deterrent than the risk of serious injury or death.