2..
In anticipation of a handoff or point out, or

3..In conjunction with a request for control of an aircraft.
b..A term used by ATC to refer to one or more aircraft.
TRAFFIC ADVISORIES- Advisories issued to alert pilots to other known or observed air traffic which may be in such proximity to the position or intended route of flight of their aircraft to warrant their attention. Such advisories may be based on:
a..Visual observation.

b..Observation of radar identified and nonidenti-fied aircraft targets on an ATC radar display, or
c..Verbal reports from pilots or other facilities.
Note 1: The word “traffic” followed by additional information, if known, is used to provide such advisories; e.g., “Traffic, 2 o'clock, one zero miles, southbound, eight thousand.”
Note 2: Traffic advisory service will be provided to the extent possible depending on higher priority duties of the controller or other limitations; e.g., radar limitations, volume of traffic, frequency congestion, or controller workload. Radar/ nonradar traffic advisories do not relieve the pilot of his/her responsibility to see and avoid other aircraft. Pilots are cautioned that there are many times when the controller is not able to give traffic advisories concerning all traffic in the aircraft's proximity; in other words, when a pilot requests or is receiving traffic advisories, he/she should not assume that all traffic will be issued.
(Refer to AIM.)

TRAFFIC ALERT (aircraft call sign), TURN (left/right) IMMEDIATELY, (climb/descend) AND MAINTAIN (altitude).
(See SAFETY ALERT.)
TRAFFIC ALERT AND COLLISION AVOID-ANCE SYSTEM- An airborne collision avoidance system based on radar beacon signals which operates independent of ground‐based equipment. TCAS‐I generates traffic advisories only. TCAS‐II generates traffic advisories, and resolution (collision avoid-ance) advisories in the vertical plane.
TRAFFIC INFORMATION-
(See TRAFFIC ADVISORIES.)
TRAFFIC IN SIGHT- Used by pilots to inform a controller that previously issued traffic is in sight.
(See NEGATIVE CONTACT.)
(See TRAFFIC ADVISORIES.)

TRAFFIC MANAGEMENT ADVISOR (TMA)- A computerized tool which assists Traffic Management Coordinators to efficiently schedule arrival traffic to a metered airport, by calculating meter fix times and delays then sending that information to the sector controllers.