It can be safely assumed that food manufacturers would try to avoid red traffic light labels on their products because they may decrease sales. (theconversation.com)
There's nothing that's actually really simple here, because you do get scenarios where... say, lots of mueslis have lots of red traffic lights because they use a lot of dried fruit... (abc.net.au)
Another powerful measure of success would be to see how many products with red traffic lights are reformulated. (theconversation.com)