I got this picture from Nicolae Halmaghi, who is so kind to give permission to use it. We can learn a couple of things from this image.
How do you tell people what is in for them? And how do you make that more tangible?The city Elm Grove made a nice effort to come up with a different approach. They make it personal: the chances of crash for the red car are gone up with 30%. I like it because it is going further than the other signs I have seen. I think it can be inproved because 30% more chance is very hard to see. How could you turn 30% more chance into a visual image that is more esay to grasp?