The way it's supposed to work, the ground controller first verifies that there a...

bombcar · 2026-03-23T17:27:38 1774286858

Which is exactly what failed here, so saying "it shouldn't fail by not failing" doesn't help terribly much.

Having grade-separate crossings for vehicles might, but that introduces new issues (plane skidding off runway could hit the incline and break up).

selectodude · 2026-03-23T17:53:33 1774288413

O’Hare has those but it’s not helpful for emergencies that happen on the runway itself.

hypeatei · 2026-03-23T22:29:30 1774304970

Well, sure, but in that case it's expected that the runway is closed.

selectodude · 2026-03-24T00:03:45 1774310625

The fire truck was responding to an emergency which is why it needed to cross an active runway.

shrx · 2026-03-24T20:03:08 1774382588

That is exactly my point. What visual aids do the ATC controllers have at their disposal to decide if the runway is free for an emergency vehicle to pass?