Believe that your children must have played the game of "traffic lights", you also must know the red light means "stop", a green light means "pass". Of course, the well-known game is based on the color of the traffic lights set, even have never played this game also know traffic lights indicating significance.

 

So use this kind of representative color also is very reasonable, it let people know some things symbol (such as green) actively, there are some things indicates a negative (red), and some things are warning role (such as yellow).

 

To substantiate this claim, the university of Pennsylvania perelman school of medicine researchers to online ordering system labeled color or calories. They found that if the food to indicate the traffic light symbol or calories or both, people will book to low calorie meals. ScienceDaily said, if the menu next to mark the calorie content of information, the calories in people's food can reduce 10%.

 

The researchers also found that the traffic light is not sensitive to number of people have a greater impact.

 

In May 2017, the United States food and drug administration (fda) will be in the restaurant, cinema, vending machines, and room service food labeling in calories. For those who are sensitive to number or more research on the nutrition, the calories may effect more, such as how many calories of food consumption, the average number of should calories per day, and so on. And for those who is not sensitive to digital, or no calories to the concept of people, it is easier to understand these colored traffic indication sign, so only annotation in terms of calories, compared these people in the case of a given color symbols, are more likely to make healthy choices.

 

Researchers think that want to come to the conclusion that real, need more investigation, and also need to study different menu categories and research objects.

If the food and drug administration (fda) sure you want to take some measures to inform customers of its calorific value, so the study is well worth government agencies to consider. It shows that in addition to the annotation in calories, an intuitive and visual effects for the traffic light symbol can make people more healthy food choices.