Settle down Guys/Girls............
Are there any Girls here...........or am I wasting my correctness...?
ICAO has ALWAYS allowed "real" assessment in areas of practical application.............
Color blind folk are given a real practical challenge to see if they can dfferentiate between the colors on the ground......................and so has the folk that have "failed" the earphone test...........
If you can understand and acknowledge the ATC guy/girl with a clearance.............then thats a pass.