All I know about assessment 2 is that you can't really prepare for it. I saw something on Wikipedia that gave a brief idea. Like the earlier assessment I guess it is designed to test the areas that are deemed to be important strengths in order to succeed in becoming an ATC. Problem solving; logical thought processes; and reaction times for instance. I dont know anything about a Collision Avoidance Test but one of the 'games' on the NATS website seems to test that to an extent - I managed to get to level 6 before my birds started falling out of the sky
