Definition
A coordinated set of tools, procedures, and personnel used by air traffic control to balance air traffic demand against system capacity, regulating the flow of aircraft to prevent overload at airports, sectors, and en route segments.
Plain English
A system controllers use to keep too many aircraft from arriving at the same place at the same time. It spaces out departures and arrivals across the country so things stay manageable.
Context Anchor
Seen in FAA acronym lists, NOTAM-related material, and air traffic control discussions about delays, routing, and airport arrival flow.
Why Pilots Care
TMS decisions directly create the delays, reroutes, and departure restrictions pilots receive during peak traffic periods.
Intuition Check
Do not read TMS as an airplane’s onboard traffic display. Here it means the air traffic control system used to manage the overall flow of aircraft, not a cockpit traffic-warning device.
Example Sentence 1
The traffic management system issued a ground stop for arrivals into Newark due to thunderstorms over the field.
Example Sentence 2
TMS metering kept arrivals spaced so the arrival runway never became overloaded.