What Type of Traffic Does My Automotive Device Use?

Your Garmin automotive device may come with an external traffic receiver called the GTM 20, which is embedded along the provided vehicle power cable. This receiver allows the device to receive FM radio signals with information about upcoming traffic, which it then displays on the map.

Since the traffic receiver is built into the vehicle power cable, your device will not receive traffic information unless the cable is connected to your device and vehicle. Using the GPS device without the vehicle cable, or with a third-party vehicle cable, will result in no traffic information. For traffic troubleshooting see  Troubleshooting an Automotive Traffic Issue.

Replacement traffic receiver cables for your device are no longer available.