In addition a log of use of the event recorder was stored.

And he had to find Darla as well, or lose the irreplaceable data stored in her event recorder.

The lead locomotive and its "event recorder" or black box were retrieved on Friday.

Install event recorders on all new or improved grade crossings.

Many signalling systems also have local event recorders for recording track circuit status.

To establish how far that second train moved, Officer Martin said he asked the railroad for data from the engine's event recorder.

The safety board finally prevailed, and starting in 1995 trains that go faster than 30 miles an hour were required to carry event recorders.

After winning the fight to require event recorders, the safety board pushed to make them crash-worthy.

Although rules on making event recorders crash-worthy are expected soon, full implementation could take several years, according to the safety board.

The safety board soon removed the "event recorders" from both trains.