Airports Council International - Europe (ACI), Airlines for Europe (A4E), the International Air Transport Association (IATA), trade unions and other organisations asked the EU Commission to introduce a common testing regime to eliminate the need for quarantines and other restrictions. However, the EU took this advice and then went ahead with calls for a traffic light system, classing regions as green, orange and red according to their level of risk, to end a confusing patchwork of travel rules across the block. However, this does not require nations within the EU to replace quarantine with testing – hence it is totally useless to the aviation sector. It is a failure.