The RDS on the optional JBL sound system allows the radio to receive digital data transmitted along with the standard FM radio signal. This information can include station call letters, program format, the name of the song and the artist playing, as well as other useful information. RDS also helps make it easier to find traffic and emergency information. RDS allows customers to receive the weather band, which provides National Weather Service Reports 24 hours a day. RDS allows the vehicle owner to personalize the radio for his preferences.