People who think that AM radio is useless in the modern era, have clearly never lived in a city with a 50,000 watt AM station that has extremely regular traffic updates. Info on crashes, bridge and tunnel problems, etc reported by a local who knows all of the choke points and common problem areas is very valuable, particularly because you can get it hands-free without needing to look at an app on a phone or on a car screen.

And often more reliable and better than just relying on a navigation app to route you around bad traffic.

In the Pacific Northwest you will also get updates on border traffic between Washington and BC, and also WA and BC ferry information.