We evaluated the navigational performance of commercial airline pilots in simulated free flight conditions using two cockpit displays of traffic information (CDTI). One display presented minimal essential navigation information. The other added color-based time-to-contact (Tc), minimum-range, and altitude intent information. New metrics of separation maintenance were developed. Results indicated performance gains for the CDTI that automatically calculates and displays conflict-alerting information. Recommendations are made for advanced avionics for use in free flight.
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