[alex43578]

Depending on how late the go-around/aborted landing is triggered, that can be a danger in itself. Any unexpected event in the landing flow has a risk, to the point that there's a "sterile cockpit" rule in that window.

Even if it's just a warning to the ATC, distracting them and forcing them to reexamine a false positive call interrupts their flow and airspace awareness. I get what you're saying, that we could err on the side of alert first, out of precaution; but all our proposed solutions would really come down to just how good the false positive and false negative rates are.

BTW, stopping at a red light unnecessarily (or by extension, gunning it to get through a yellow/red light) could get you rear ended or cause a collision. Hard breaking and hard acceleration events are both penalized by insurance driver trackers because of that.

[fc417fc802]

I'm assuming there that any such system would be appropriately tuned not to alert outside of a reasonably safe window. My assumption is that it would promptly notice the conflict following any communication which under ordinary circumstances should leave plenty of time to correct. To be fair I don't expect such a system would address what happened in this case because as you note false alarms on too short a notice pose their own danger which may well prove worse on the whole.

This specific situation I think could instead have been cheaply and easily avoided if the ground vehicle had been carrying a GPS enabled appliance that ingested ADS-B data and displayed for the driver any predicted trajectories in the vicinity that were near the ground. Basically a panel in the vehicle showing where any nearby ADS-B equipped planes were expected to be within the next 30 seconds or so.

> stopping at a red light unnecessarily

Is it not always legally necessary where you live? It certainly is here. When I described them as unnecessary I was recalling situations that would clearly be better served by a flashing yellow.

[alex43578]

Yeah, I think there's certainly optimizations possible. Listening to ATC traffic, I'm surprised just how much of the ground ops stuff could be computerized: basically traffic signals for runways.

What you're describing almost sounds like TCAS, a collision avoidance system for planes in the air, and would be a good idea.

As for the redlights, yes, legally you would be required to stop if you're before the stop line. My language wasn't clear, as I was trying to describe those scenarios where a light's turning just as you're getting to/into the intersection. Some people will gun it to get through, others will jump on their brakes to not run what's technically a red.