When I drive in traffic, which is rare these days, I listen to KBEM-FM, which has to be the only station of its type anywhere. During rush hour, the format is all jazz and all traffic. They get limited funding from the state transportation department. Every 10 minutes, they do 8 minutes of jazz and 2 minutes of traffic, during morning and evening rush hours. Minneapolis Public Schools owns the station and students have been on-air over the years. Pretty cool.
https://en.wikipedia.org/wiki/KBEM-FM
https://en.wikipedia.org/wiki/KBEM-FM