How to teach drivers to think about the dangers that can occur at any time, especially when traveling near, say, the school building? The answer is - they should be shocking. But how? The municipal authorities of the Canadian city of Vancouver, it seems, struck a fresh idea. On the roadway next to the building of one of the elementary schools in the western part of the metropolis, they decided to depict a three-dimensional optical image of a little girl suddenly threw herself to cross the road for the ball. This should teach drivers to care and caution.