Fun fact: traffic lights have a software free security mechanism, even a botched software can't make it green in all directions. Only safe states are ever allowed.https://twitter.com/SteveBellovin/status/962506016331108352 …
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Also, this only prevents chaos at crossings that have signs regulating right of way as back-up. (Gesendet aus einer "rechts-vor-links" Nachbarschaft wos regelmäßig kracht).
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