Awesome. The city of Berlin made a smart move on January 1st by introducing a new law and traffic sign to its downtown area. Berlin’s Senate Department for Health, Environment and Consumer Protection aims to reduce the number of people affected by excessive concentrations of noxious substances by one quarter. I have learned trough TreeHugger that 2 years ago the Senate also decided that bikes should represent 15% of the city traffic by the year of 2010. They are said to be doing great at achieving that goal and may be able to pull the plan off earlier than that. Good luck.
/click here to read/download the Berlin Umweltzone brochure (pdf, 265kb)