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sentientslugyesterday at 5:47 PM1 replyview on HN

A runway light does not physically prevent a vehicle from entering a restricted area in the same way that an interlock would. Not saying it’s practical but an interlock would have indeed prevented an accident of this type.


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0xffff2yesterday at 5:51 PM

Yes, I get that. But an airport is not a rail network. The question is how you would actually implement physical interlocks on an airport in a way that works and is safe while controlling movement of everything from a pickup truck to an A380? It's an incredibly hard problem to solve. And keeping in mind too that the Runway Status/Entrance Lights first started development over 30 years ago and are still only deployed at 20 airports, despite being a vastly simpler system than one controlling physical barriers.

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