By this time 1610 kHz had been assigned for use by hundreds of Travelers Information Stations in the United States. Moreover, the licensing authority was shared between the FCC and the National Telecommunications and Information Administration (NTIA), so coordination between these two agencies was required. It was concluded that, for operation on 1610 kHz, TIS and broadcasting stations were considered "co-primary" services, thus existing TIS stations were protected from having to move to new frequencies. (This has effectively made it impossible to assign any standard broadcasting stations to 1610 kHz in the United States.) It was also informally suggested that, once most radios could tune to the higher frequencies, all of the TIS stations on 1610 kHz could be moved as a group to 1710 kHz, however this was never implemented.