This Swedish poster encourages the use of a helmet. Translation: "As a cyclist you belong to the naked, unprotected group in the traffic. You don't have a metal shield or a safety belt to protect you. The most important thing you've got to protect is what you have inside your helmet." Personally I think that the guy in this picture should be watching where he's going rather than looking where he's looking. Note the generator lights on the front wheels and the skirt guards on the rear wheels.