How Digital Road Signs Talk to Cars

What happens when a stop sign isn't just painted metal but a data packet broadcast over short-range radio? This episode unpacks the technical architecture behind digital road signage — the SAE J2735 message types, the 5.9 GHz band, the security certificates that prevent fake signs, and why physical signs aren't going anywhere. We also tackle the rollout reality: where the standards are, what's actually deployed, and why there's no single "NASN specification" to point to. Episode #322998 — open it directly at myweirdprompts.com/322998