Effects of Traffic Light Labelling and Increased Healthy Range on Beverage Choices from Vending Machines.

To test whether traffic light labels and an increased range of healthy beverages, individually and in combination, can increase healthy beverage choices from vending machines. Two studies ( Both studies utilised an online Qualtrics survey that featured a digital vending machine display. Both studies ( Featuring traffic lights did not significantly influence beverage choices ( The results suggest that the traffic light system and increased healthy range are not maximally effective when used on their own, and benefit greatly when combined, to increase healthy beverage choices. It was suggested that the provision of traffic light labels supplied the necessary nutritional information, and the increased healthy range offered greater opportunity to act in accordance with that information. In so doing, the present findings offer a promising pathway for reducing unhealthy beverage consumption.