Norway is the first country to shut down the FM radio band as part of a transition to digital radio. The country will have FM signals completely shut down by December of 2017.
The country says the move will offer “more diverse and pluralistic” content and “better sound quality and new functionality.” Norway was the first country to launch a DAB (Digital Audio Band ) channel back in 1995. Around 50% of Norwegian households have at least one radio with access to the digital audio band.
Like HDTV, the sound quality is better, but you have the same issues with the signal strength degrading, making reception in rural areas more difficult. DAB signals can carry additional information such as song titles or even scroll traffic updates without interrupting the music.
DAB broadcasts are not available in the US. Canada dabbled in DAB radio for a few years, but broadcasters began shutting those signals down in 2010.