After its launch at the end of last year in the UK, the voluntary traffic light labeling system seemed to be a success. The labels use an easy-to-read, color-coded system to indicate that a product has a high, low or medium level of fat, saturated fat, sugar and salt. The premise behind the label is that it eliminates the time and hassle of label-reading, not to mention the stigma of "diet" foods, or being on a diet, which is a concern to some. Consumers learn that greens are good for everyday and the reds are fine once in a while.

Now, Australia is probably going to give the labels a go. They are hoping that, just like in Britain, consumers will opt for healthier foods over less healthy choices with more regularity. Surveys show that 9 out of 10 consumer find the system clear and easy to use, enabling 97% of consumers to make the better nutritional choice when comparing foods with the labels.

In the meantime, the British government is considering making the labeling system mandatory in the hopes of helping consumers further. Could the US be the next country to try the system?

The traffic light system is a voluntary food labeling system devised by the British Food Standards Agency to denote with a single glance the levels of fat, saturated fat, sugar and salt in products. While not necessarily intended to let consumers know that the product is health food, it does give them a very fast, clear idea of what they are about to eat. Several supermarkets, including Waitrose and Sainsburys have adopted the program with surprising results: sales of unhealthy foods have dropped and healthier foods have increased.

Why is this working when so many other awareness campaigns have failed in the past, or enjoyed only a very limited success? It seems to be the fact that the labels are hard to ignore. Or rather, it is that they take no effort to read. A consumer doesn't have to spend time trying to decipher a nutritional label or wonder what "48% less fat!" really refers to. They don't have to draw attention to the fact that they want to know the nutritional information, which can be embarrassing for some shoppers.