Garmin GTM-12 User Manual

GTM™ 12 OWNER’S MANUAL

The Garmin® GTM™ 12 FM TMC Traffic
Receiver receives Traffic Message Channel (TMC)
information broadcast over the FM radio data system.
When a traffic message is received, your Garmin
GPS device displays the incident on the map and can
change your route to avoid the traffic incident. For
coverage areas, refer to the Garmin Web site at
www.garmin.com/fmtraffic.

Service Information

Your GTM 12 has a 15-month subscription to Clear
Channel’s Total Traffic Network service.

When you are in an FM TMC service area in the
United States, your GTM 12 receives traffic signals
as soon as you connect it to your Garmin GPS
device.

Your GTM 12 receives free FM TMC services

NOTE: The FM traffic receiver and GPS

device must be in data range of an FM station
transmitting TMC data to receive traffic
information.

NOTE: Garmin is not responsible for the

accuracy of the traffic information. The FM
traffic receiver simply receives signals from
the traffic service provider and shows that
information on your Garmin GPS device.

available in Europe.

You can renew your subscription and add FM traffic
subscriptions for other countries. Check the Garmin
Web site at www.garmin.com/fmtraffic for other
available services.

May 2006 Part Number 190-00690-00 Rev. B Printed in Taiwan

Connecting Your GTM 12

1. Connect your Garmin GPS device to external
power.

2. Connect the mini-USB plug on the GTM 12 to the
mini-USB connector on your Garmin GPS device.

Antenna: route on windshield

using the suction cups

Avoiding Traffic

The Map page shows a when there is a traffic
incident on your current route or on the road you
are traveling on. Touch the to view the traffic
information. Touch a traffic incident to review it.
Touch Avoid to route around the incident.

Viewing Traffic Information

Each GPS device provides a list of traffic incidents.

Mini-USB plug: connect to the mini-USB

connector on your Garmin GPS device

3. Use the suction cups to position the antenna
on the windshield. For best results, position the
antenna vertically.

CAUTION: Drivers in California and

Minnesota are prohibited from placing anything
on the windshield of a vehicle. See the back
page for more information.

4. Route the GTM 12 cable so it does not interfere
with vehicle operating controls.

On many GPS devices, you can access this list by
touching the traffic icon on the Menu page. Touch an
item in the list to view the details.

Severity Color Code

In the traffic incidents list, the bars to the left of the
traffic symbols indicate the traffic incident’s severity:

Green = Low severity; traffic is flowing normally.

Yellow = Medium severity; traffic is a bit

Red = High severity; traffic is heavily congested

congested.

or stopped.

Using Traffic Data with Your Garmin
GPS Device

The GTM 12 works with your Garmin GPS device to
show traffic flow and incident information and enable
routing around traffic incidents. Although each GPS
device operates differently, they all provide similar
traffic information.