- Provides real-time traffic information to compatible Garmin GPS car navigators
- Alerts users to local traffic tie-ups, displaying graphical map reference on compatible Garmin products
- Weighs just 74 grams
- In Great Britain: The GTM 12 traffic receiver comes preloaded with a lifetime subscription to TrafficMaster, the cost of which is included in the price of the unit.
- In continental Europe: Basic TMC data is a free public service, accessible through a number of providers.
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Technical Details
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Product Description
The Garmin TMC GTM 12 is a small FM-band traffic receiver that needs no installation and simply connects to your compatible Garmin GPS to provide real-time Traffic Message Channel (TMC) data which is then used to depict and identify problem areas on your journey. Available in a fast-growing number of cities throughout the UK and Europe, this TMC data gives prompt, accurate notification of accidents, road construction, police, or emergency action, etc.?so drivers can visually monitor traffic flow and, if necessary, select an alternate route.
The Garmin TMC GTM 12 traffic alerting system works on an FM sideband signal which utilizes RDS (Radio Data Service) technology. Digitized and coded real-time traffic broadcasts are received via a "silent" FM data channel?which means that drivers can still listen to music or news programming on their car radios, without interference from the incoming FM traffic data transmissions. 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 Garmin TMC GTM 12, you see traffic developments in real-time, as they happen, so you can make the right decision sooner. The system will alert you when a traffic problem is on your route and propose an alternate route to avoid the incident.
This portable traffic receiver features a compact design with a new easy-to-install antenna. Using a USB connection, the GTM 12 delivers real-time traffic information to compatible Garmin GPS products. Garmin products will then alert the user to local traffic tie-ups, display graphical map symbols, and suggest alternate routes. The GTM 12 is currently compatible with:
nuvi 300
nuvi 300T
nuvi 310
nuvi 310 Deluxe
nuvi 350
nuvi 350
nuvi 350
nuvi 360
nuvi 360T
StreetPilot 2720
StreetPilot 2820
StreetPilot 7200
StreetPilot 7500
StreetPilot c340
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Most Helpful Customer Reviews
32 of 33 people found the following review helpful:
1.0 out of 5 stars
A lot of promise but...,
By Angry Monkeys (UK) - See all my reviews
This review is from: Garmin GTM 12 FM TMC Traffic Receiver. Compatible with Garmin nuvi 300 / 300T / 310 / 310 Deluxe / 350 / 360 / 360T and the Garmin StreetPilot 2720 / 2820 / 7200 / 7500 / c340. (Electronics)
I originally ordered one of these after I'd taken a trip that should have taken 2 hours, and it took closer to 5.
When It arrived I eagerly connected it to my Nuvi 350 to see what happened. Straight away I saw a blue traffic icon appear on the main menu of the Nuvi, and I clicked it to see the traffic reports, and unfortunatly this was the start of the disappointment. No traffic messages at all. "Ok", I thought "I'll see how it goes tomorrow". My journey to work takes me on the A1, A406, A41 and M25, some of the busiest roads in the UK and in the middle of the coverage area I'd checked on the gamin web site (https://shop.garmin.com/fmtraffic/select_service_plan.asp?L=EN&CR=2&PR=2) No reports all the way to work. After contacting Garmin technical support I found there are a number of well known issues with the product. Firstly, if you have a car with a heated windscreen, or heat reflected coating don't bother. The windscreen will block the FM signal making the unit worthless. (I know most Mercs and Citroens are affected by this) Secondly, the unit is not a strong receiver. As there are very specific rules about the transmission power of radio signals in the UK, reception is a big problem. Other units that use Trafficmaster usually patch into the car's external aerial, so can receive a much weaker signal. Not these I'm afraid. Thirdly the coverage is not quite accurate. Whilst information is gathered about the roads in the coverage area, that is not a guarantee that information is broadcast in those areas. Checking a few forums soon showed that there are some big holes in the UK where you wont get any coverage. From what I've read if you are considering this unit go for the GTM 10 or 11 which will allow you to connect to another aerial. Even then be prepared for a little disappointment about the coverage you will get. I wish I could provide more information about the routing/ traffic avoidance capabilities of this product, but as it has still not received any messages I can't comment.
1 of 1 people found the following review helpful:
5.0 out of 5 stars
GTM 12 TRAFFIC RECIEVER,
By oggiewing (UK) - See all my reviews
This review is from: Garmin GTM 12 FM TMC Traffic Receiver. Compatible with Garmin nuvi 300 / 300T / 310 / 310 Deluxe / 350 / 360 / 360T and the Garmin StreetPilot 2720 / 2820 / 7200 / 7500 / c340. (Electronics)
PLUGGED IT INTO MY ZUMO 550 ON THE BIKE AND WITHIN SECONDS THE TRAFFIC ALERTS WERE THERE,ZOOMED OUT AND COULD SEE THE ALERTS FOR ALL OVER THE UK AND I LIVE IN CORNWALL SO SIGNAL STRENGTH WAS NOT AN ISSUE.
1 of 1 people found the following review helpful:
5.0 out of 5 stars
It just works,
By
This review is from: Garmin GTM 12 FM TMC Traffic Receiver. Compatible with Garmin nuvi 300 / 300T / 310 / 310 Deluxe / 350 / 360 / 360T and the Garmin StreetPilot 2720 / 2820 / 7200 / 7500 / c340. (Electronics)
Plugged in and straight away I had all the traffic for the whole UK. Admittedly I don't have a heated windscreen but it warns of that on the garmin site if you dig around. It is important to make sure you get a UK spec item, otherwise you might have to pay to see the traffic. Great purhcase. Coverage seems solid.
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