Avionics devices that provide a cockpit display of traffic information (CDTI) enable pilots to acquire, verify, and maintain pre-defined spacing intervals from other aircraft. It is of interest to the Federal Aviation Administration to determine how the use of these displays influences pilot/controller operational communications. The operational evaluation of the CDTI in October 2000 provided an opportunity to examine some of these issues. Departure profiles (13 without CDTI, 32 with CDTI) were established to evaluate the ability of flight crews and air traffic controllers to manage long (6 nm) and short (4.5 nm) spacing intervals between departing aircraft during 3 day and 2 night operations.