Red-yellow-green signs on german food

On the new labels costumer can read the nutrion information for example calorie.

 More than half of shoppers surveyed are likely to read the
food label before buying, but it is not enough. The german food and bevarege
companis will label their products food, with special signs to inform the
costumer about calorie value of the products.
Nowadays the consumer protection agencies protest again foods
with high salt and calorie level and want to get uniform labelsystem all around
Europe. They want to see a three-color signsystem, wich could be show as by
traffic lamps wich food is healtier. Not every food companies are happy because
of this system, but some of them started to introduce the new labels. For
example Metro, Germany's largest food retailer, said it has become the first
company to introduce "comprehensive" nutritional labeling on its
private-label products.