Final answer:
Air traffic, especially in Class A airspace, is regulated by strict rules enforced by the FAA to provide separation services, maintaining safe distances between aircraft to avoid collisions.
Step-by-step explanation:
The airspace in which all aircraft, whether flying under Visual Flight Rules (VFR) or Instrument Flight Rules (IFR), receive separation services is known as Class A airspace. In this airspace, Air Traffic Control (ATC) provides full traffic management services to ensure safety and efficiency in the skies. The Federal Aviation Administration (FAA) requires each airplane to maintain a specific distance from others, which is typically a horizontal separation of five miles and a vertical separation of 2,000 feet (or 1,000 feet if the aircraft are flying at altitudes below 29,000 feet). This strict regulation allows for a smooth and safe flow of air traffic, similar to how quantum mechanics dictates the placement and behavior of electrons.