Using TMC in Garmin nuvi for free

**~~TUPLI~~** · 24th October 2018, 07:52 AM

Database for FM Traffic Providers software version 4.70, available to DL Garmin Express

**Giomen** · 26th October 2018, 02:09 AM

Spoiler: Direct link

Change log:

Code:

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Maybe need upgrade to new version 2.60 for GTM70 Traffic Receiver - DAB (Si468x) and Firmware (Si468x)...

**JonyW** · 10th January 2019, 05:35 PM

Maybe somebody can help me with TMC in Poland.
I use Garmin Mappilot (instaled in Mercedes car). That equipment is based on Garmin. It has TMC reciver because from few days I receive information (but it is not stable - one day is working and other not, and it is only in my city, when I go outside I don't have signal). I try to find possibility to run it. In attachment photo of file structure on SD card. I have there file TrafficProviders.xml (version 2.5) and it looks the same like v4.7 which I find here (subscriptions codes on the end of that file are exactly the same). In subscriptions (in menu settings I have few providers but not in Poland – but I have Diesta (FI)) You think it is possible to run it and where I shuld start?

Spoiler: LARGE PIC

**Poppinpills** · 23rd April 2019, 12:38 AM

Hi I have a small question. I have a GTM 26 traffic receiver and a Garming Nuvi 2555LM. I noticed a small warning on the first post about the possibility of jetmouse subscriptions not working and possibly even causing the GTM 26/36 receiver to no longer work at all. However, reading through the thread there is a bunch of different mentions about 40.bin and 140.bin which confuses me even further.

Can someone please simplify it for me? Would entering a jetmouse subscription code causes my 2555LM to no longer receive traffic? Does anyone else that have a Nuvi 2555LM and a GTM 26 have any experience in this matter?

My friend has successfully used jetmouse to get the "Total Traffic Network" on his Garmin Nuvi 255W and I would love to have this subscription on my Nuvi 2555LM as well, but I am unsure if my 2555LM would be able to get this subscription from jetmouse. Any help would be greatly appreciated. Thankyou.

**unsermeister** · 19th May 2019, 06:11 PM

Hi
Can anybody re-ulpload the file?
[Only registered and activated users can see links. ]
I cannot download it. Also, I'm not sure to use it as I have a nuvi 255.
Cheers

**Butters** · 19th May 2019, 10:10 PM

@unsermeister
The Jetmouse link in the first post seems to work now.

Your device has traffic capability. The first 2 screenshots at the top of initial post seem to be of a nuvi 265 using traffic in fact.

**minetraps** · 24th April 2020, 11:54 PM

I don't own a Garmin, but have been doing a lot of research and though I would share.

Keyword explanation:
CC = country code (available in TrafficProviders.xml)
SID = service ID (available in TrafficProviders.xml)
SVK = service key (number from 0-8 inclusive, 0 means no encryption, 1-8 refer to predefined encryption tables - you can experiment to see what works)
LTN = location number number (available in TrafficProviders.xml)
TransmittedLTN = transmitted location table number (usually the same as LTN)

Calculating values:
FID = SID | (CC << 8) | (SVK << 12) [bitwise operations]
PID = LTN
RgnID = TransmittedLTN
VenID = 1 (add) or 0 (remove)

Example: (TMCPro/HERE Germany)
Note everything here is expressed in decimal.

<country name="Germany" cc="13" ecc="224" fmTuningGrid="World" dab="DE">
......
<provider>
<providerName>HERE Traffic (DE)</providerName>
<providerCopyright>HERE Traffic. Copyright HERE</providerCopyright>
<pay>true</pay>
<tuning ltn="1" sid="50"/>
</provider>

CC = 13
SID = 50
SVK = 1 (can be guessed)
LTN = 1
TransmittedLTN = 1 (usually the same as LTN)

Therefore...
FID = SID | (CC << 8) | (SVK << 12) = [Only registered and activated users can see links. ] = 7474
PID = LTN = 1
RgnID = TransmittedLTN = 1
VenID = 1

....which matches what is on the 1st page.

What about for a free service with no encryption?
Same process but use a SVK value of 0.

Why would LTN (PID) and transmitted LTN (RgnID) be different for a small number of providers? (ie. for France Via-Michelin & V-Traffic)
A small number of providers do not encrypt their RDS-TMC location data, but instead choose to broadcast a "fake" LTN value (PID) that is not officially recognized by mapping data so a pre-defined mapping must indicate what the real LTN value is (RgnID) - this is also referred to as "conditional access".

When both the PID and RgnID are the same and encryption is enabled (SVK is not zero), its referred to as "light encryption".

**Izam** · 13th September 2020, 02:48 AM

Hi All,

I am using a DNX4150BT but the "Traffic->Subscriptions" options seems to be grayed out.
Through Garmin Express, the TrafficProvider.xml was updated to v4.9 but i can't seem to get any traffic info.

Is there anything that I should try to get the traffic working?

**Boki** · 13th September 2020, 09:48 AM

[Only registered and activated users can see links. ]
INRIX Traffic with 2 years trial

Is it a free service in Singapore?

**Izam** · 13th September 2020, 10:16 AM

TMC via FM is supposed to be free but somehow not working for me even after updating the Xml through Garmin Express.

[Only registered and activated users can see links. ]
Oh the SG version of our manuals/features mentioned nothing about INRIX though..

Originally Posted by alicantor

Did you activate the tools/settings/navigation/avoidance/traffic option ?

Tried this one too but didn't see any change..

Originally Posted by greekislandlover

Hi, I think I give up at this point!

Pasta 1 went on and it updated. Loaded pasta 2, and it hasn't recognised it has a traffic cable since. Done a hard reset just to see if that helps. No amount of twiddling the cable makes it appear as a traffic module....

Hi All, To add on, I entered debug mode of the DNX4150BT (6 seconds of long press at the speedometer) and this was also all I saw.
My trafficprovider.xml is version 4.90 already, so wondering what could be the problem why the traffic is not coming in (SG).

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