The result is that drivers find themselves enclosed by a corset of prescriptions, so that they develop a kind of tunnel vision: They're constantly in search of their own advantage, and their good manners go out the window.
The new traffic model's advocates believe the only way out of this vicious circle is to give drivers more liberty and encourage them to take responsibility for themselves. They demand streets like those during the Middle Ages, when horse-drawn chariots, handcarts and people scurried about in a completely unregulated fashion.
It may sound like chaos, but it's only the lesson drawn from one of the insights of traffic psychology: Drivers will force the accelerator down ruthlessly only in situations where everything has been fully regulated. Where the situation is unclear, they're forced to drive more carefully and cautiously.
http://www.spiegel.de/international/spiegel/0,1518,448747,00.html