“…A great deal of research has examined the factors that influence performance on air traffic control conflict detection tasks (Bisseret, 1981;Boag, Neal, Loft, & Halford, 2006;Eyferth, Niessen, & Spaeth, 2003;Galster, Duley, Masalonis, & Parasuraman, 2001;Metzger & Parasuraman, 2001). Studies have demonstrated that the distance between the aircraft at their point of closest approach (minimum distance) influences perceptions of conflict risk (Stankovic, Raufaste, & Averty, 2008) and that conflict detection responses are faster when aircraft are flying at the same speed than at different speeds (Rantanen & Nunes, 2005).…”