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Garmin GTM 12


Why waste your time stuck in traffic?

With the Garmin GTM-12 FM Traffic Receiver for Traffic-Enabled GPS Navigators, you save drive time, gas, and your sanity by adding traffic services to your compatible Garmin. The GTM 12 is an FM TMC (Traffic Message Channel) traffic receiver and antenna. It receives digital information (where available) on traffic and road construction tie-ups that your compatible Garmin unit uses to offer an alternate route. The GTM 12 features a new compact design and includes an antenna suction cup mount, making it easy to install.

The Garmin GTM-12 help you avoid traffic tie-ups. TMC data is available in a fast-growing number of cities throughout North America and Europe, and gives prompt, accurate notification of accidents, road construction, police, or emergency action, etc. In most areas, depending on the service provider, TMC traffic broadcasts are continuous. There's no waiting for scheduled traffic news updates or random alerts. With the GTM 12, you see traffic developments in real-time, as they happen, so you can make the right decision sooner. The system also alerts you when a traffic problem is on your route and proposes an alternate route to avoid the incident. Because traffic broadcasts are received via a "silent" FM data channel, you can still listen to music or news programming on your car radio without interference from incoming FM traffic data transmissions. The GTM 12 is a plug-and-play FM RDS-TMC receiver that does not require professional installation.

Note: Traffic services are available only in select cities where coverage exists. A subscription may be required to enable traffic capability. The purchase the GTM 12 includes a 15-month subscription to Clear Channel TMC in the Americas.

What's in the Box
GTM 12 FM TMC traffic receiver, and owner's manual.



Customer Reviews

Average rating:

Functional but poor use of technology

Yes this unit works are advertised but the service needs work. The Traffic Network people them selves have several issues to resolve.
1) Construction zones listed are incomplete or not up to date.
2) Traffic backups are inconsistent in reporting some are missed while others are listed well after the backup has cleared.
3) Traffic accidents are not updated in a timely fashion this makes the service pretty much useless.
As stated before the unit itself is not the problem it is the service provider that bites.


good in the right area

The device works very well when you are in an area that supports traffic information. Like on major highways and interstates near major cities. If your not then it doesn't notify you. However, it may still get you around traffic if you see it ahead and can detour to an exit. This does not always work if your not somewhat familiar with the area. Other than that it's pretty cool. I think the yearly subscription fee is a little high.


Good, not great

I looked at all the reviews on Amazon seriously before I bought this, but even though there were mixed reviews I decided to go for it anyway. I also feel mixed about it. Sometimes it works great and I've avoided traffic with it, but sometimes it's off. At least once it's told me there's slow traffic when there hasn't been, and hasn't warned me when there has been slow traffic. Usually it gets it though, especially when there's an accident. Not a bad item, I'm not sure it's worth the money or the renewal, but it's not bad.


Works great in populated (metro) areas

While I am in a Metro area it works great. Too bad the technology hasn't gotten to the point where it will work everywhere.
It picks up all the traffic in Portland as well as I can see how the traffic is in Seattle while still in Portland.
Re-routing feature is effective, sometimes a little slow to report when a traffic incident has been cleared up. But if you use it in conjunction with radio traffic reports it is a real handy tool.
Only complaint is that you have to run it with the power cable plugged in, all the wires get a bit cumbersome.
Overall well worth the price and has already saved me significant time on the road.


Area Dependant

I bought this with a C340. No problem in set up. I travel mostly between Cincinnati and Columbus and both cities have decent coverage but travel even on major highways outside radio reception of a large city and it won't get anything. If you live away from a large city and won't travel much to one, skip it.


Get the Garmin GTM 12 from Amazon.com.