How Does GPS FM Traffic Work?

According to Total Traffic Network, the GPS FM Traffic system receives raw traffic data from a variety of providers through an FM antenna and receiver in the navigation system, independent from the FM transmitter in a car radio.

Location

The GPS FM Traffic system works when a location is programmed into a Global Positioning System (GPS) navigation system. The Total Traffic Network reports that the GPS system is then sent information on traffic problems on the programmed route. Visual and audio alerts are available for use with the GPS FM Traffic system.

Sources

The Crutchfield website reports that GPS systems receive raw traffic data from a variety of sources, including police and emergency services, departments of transportation and traffic cameras. The GPS FM Traffic system reports on diversions, accidents, emergencies and scheduled road issues.

Radio

Total Traffic Network explains that the GPS FM Traffic system does not interfere with any audio FM radio stations. GPS systems automatically tune to the nearest local FM Traffic station for data, using a small area of bandwidth commonly used by audio-based radio stations to transmit song and contact information.

References

• Crutchfield: Traffic Information Services
• Total Traffic Network: FAQ Answers