Was at a rest stop and heard talking coming from a box on a pole. It was reading out the weather in TTS voice, guessing it was the transmitter for one of these stations.
Which is why I think this whole thing is really dumb. You know what would be actually useful for requiring in cars that wouldn't otherwise be included? A NOAA weather radio mode in the car, along with the option to have it automatically alert me when it detects an alert. In a disaster I'll be listening to that, not trying to hunt down an AM radio station I haven't willingly listened to in decades.
https://www.weather.gov/nwr/