Government-backed efforts to perfect anti-collision systems have been going on for more than three decades.

Thanks to the two aircraft's anti-collision systems, disaster was narrowly avoided, the official said.

A commercial anti-collision system is already on the market based on this principle.

He said the anti-collision system had been on a "fast track" for years.

But even at the 1.45-mile distance calculated by the Federal Aviation Administration from its radar computer tapes, the anti-collision system should have given the alarm.

The aviation industry is wondering about this paradox, and not just in its anti-collision systems.

In the case of the F-16 incident, both the anti-collision system on the civilian jet and the fighter plane itself were supposed to keep people safe.

The report before us provides for linking active and passive safety measures, and anticipates the future introduction of anti-collision systems.

The purpose was to provide an anti-collision system at night, in fog, and other times of limited visibility.