"Finding an HD Radio station that is transmitting the Artist Experience is rather difficult. Since then I have found a few more stations transmitting album art, but the number of stations encoding it appears limited, the adoption rate among broadcasters extremely slow. Further, your local HD Radio station may be airing Artist Experience images, but you may not notice them immediately. That’s because, according to iBiquity, the album art is only sent once or twice shortly before the next song starts. So, if you tune to a radio station in the middle of the song, you will not see any album art. You will get the Title/Artist/Album text display, but no image until the next song. If the receiver has any data errors during the limited time when the image is being transmitted, the image will not display. In my opinion, this is a big problem."
http://www.radioworld.com/article/insignia-a-glimpse-of-artist-experience/211187
