I got flamed at the mere mention of some regulation (despite the number of near misses and with no mention of what that regulation might be - even self regulation). The message was "if you can't stand the heat, get out of the kitchen; we're safe enough"
Not sure that the NTSB will see things quite that way...
However, since we've all been 'surprised' by another aircraft suddenly appearing rather close by at some time or another and in the interests of safety, I think the Flarm and T-Advisor DSX type products would be a big step forward - but they're still quite expensive.
We know GPS based proximity alert features already exist in a number cell phone applications for marketing promotions, dating apps, etc. It wouldn't be at all difficult for say, Garmin, to develop this and market it as a cost effective option (even an upgrade) on all it's aviation products. It would still rely on other aircraft having the same system, but without the need to buy additional hardware, this would be much easier and cheaper to roll out.
Sounds like an opportunity for someone
