Using TMC in Garmin nuvi for free

**angelozip** · 1st April 2013, 02:55 AM

You have secure information that Garmin's Traffic Service is available in your country? In the database that have access, seems to not have references to it.

**bpb** · 1st April 2013, 11:59 AM

Many people forgot to update their trafficprovider.XML

**fundragon** · 25th April 2013, 06:32 PM

I doing GTM35. Applied NUvi 3750 in Thailand... i need Step by step for use

**rtsouza** · 8th May 2013, 07:08 PM

Dears,

I've been using my nuvi 3750 with GMT 25 cable, with Jetmouse subscriptions once a week when I go to S�o Paulo.
In my short experience i Notice that there only a few streets monitored by Navteq and every time nuvi sends me to a not monitored street it "thinks" is free but actually it's crowded. Below is a picture of my screen showing the trafic map:

[Only registered and activated users can see links. ]

If I look to Google maps with traffic info provided by maplink , seems to have more info available, see below a picture at same day and time:

[Only registered and activated users can see links. ]

Here are also the screens from my device. I don't know if this behavior is correct or there is some problem with my device get less info than the available.

[Only registered and activated users can see links. ][Only registered and activated users can see links. ]

Maybe the experts here can give me some advice to improve it ?

Thanks

**angelozip** · 12th May 2013, 05:38 AM

Rtsouza, its all correct in your signature and configutation, have not how to improve. The comprisement weak is limitation of Traffic Garmin system, well below of others like Google Maps, Maplink (the most complete) but that are only accessible on line by internet (PCs, smartphones, tablets ..)

**rtsouza** · 13th May 2013, 01:24 PM

Thanks Angelozip,

Do you know if this weakness of Navteq data is only here in Brazil or is it global?

**angelozip** · 15th May 2013, 03:21 AM

NAVTEQ is a global company specializing in maps and related services, but with strong competitors in specific areas in many countries, such as Traffic, for example, locales where it is far from the best. In various of these regions she sub hires local companies to provide traffic information that go feed their databases. But one of the biggest limitations is in the TMC (Traffic Messenger Channel) that use FM radio analogic transmission for traffic data, system used by Garmin and that do not have much to do with the amount of traffic data available on Navteq and other providers. Besides the limitation on comprehensiveness, capacity and speed in baud rate and data updates also have the question of the codes traffic compatible built-in in the map, which further limits comprehensiveness of the system, since the Navteq is not anything agile to update maps, especially in countries on the periphery of your market, as in Brazil.

To try to overcome these limitations Garmin launched in the United States the HD Traffic system that uses digital radio transmission and considerably surpassed the previous system, but still falls far short of the transmission capacity and updates from data transmitted over broadband Internet. The only advantage these radio diffusion data system is not have cost to use. To overcome such drawbacks Garmin offers services as Traffic by Smart Link, application of recent models of GPS that has bluetooth and allow the online connection data between the phone and gps, but is not a service available in South America, in addition to being paid and also depend of the cellular and broadband internet.

**bpb** · 17th May 2013, 04:09 PM

Originally Posted by fundragon

I doing GTM35. Applied NUvi 3750 in Thailand... i need Step by step for use

Yes, it's work. GTM35 is work not fix to the model (if the unit support TMC).

**rafa-abc** · 22nd May 2013, 05:08 PM

Funny is that I've been to Navteq presentation of the TMC system here in Brazil like 2 years ago and they announced 4 sources to provide traffic data:

- Radio Sul America Transito: local (Sao Paulo area) radio which count on listeners traffic info and with Maplink as well);
- G.E.T.: official traffic management company (pretty shitty info, barely of the main roads);
- Tracking system: most of private insurance companies install tracking system in vehicles, that info is gathered by Navteq. They mentioned also a 'double check' in order to avoid not to think that a parked car is stucked in a traffic jam;
- Human: Navteq agents in the main roads monitoring traffic with their own eyes :D

Seems that is not working the way they promised... what a pity.

Originally Posted by rtsouza

Thanks Angelozip,

Do you know if this weakness of Navteq data is only here in Brazil or is it global?

**rtsouza** · 24th May 2013, 07:53 PM

Originally Posted by angelozip

NAVTEQ is a global company specializing in maps and related services, but with strong competitors in specific areas in many countries, such as Traffic, for example, locales where it is far from the best. In various of these regions she sub hires local companies to provide traffic information that go feed their databases.....
...in addition to being paid and also depend of the cellular and broadband internet.

So the conclusion is that TMC is useless !!!!!