How does my sat nav traffic work???

changed · 10-09-2016, 11:44 AM

So I have the cheaper nav, the smaller screen, business nav?

My question is.... I know I don't have the real time traffic but I do have some kind of 'delayed...' Traffic updates, I was wondering how this works, is it by sat updates???? It seems to be quite dubious on accuracy, but helps sometimes!!

Martin2C · 10-09-2016, 12:15 PM

It uses the RDS-TMC system, which is basically coded message sent via FM. I had it in my E60 (Professional Nav) and it's usually pretty out of date, only really of use when there's a major incident such as a closed motorway.

changed · 10-09-2016, 12:27 PM

So just like the traffic report button we get on the radio then?

kinhwear · 10-09-2016, 01:12 PM

It is actually broadcast within the Classic FM signal and decoded by the car, you dont have to listen to Classic FM of course!!

Martin2C · 10-09-2016, 02:12 PM

Quote:

Originally Posted by changed

So just like the traffic report button we get on the radio then?

It's better than that as it's a continuous feed, but the same source, yes.

10-09-2016, 11:44 AM	#1
changed Lieutenant 25 Rep 410 Posts Drives: F10 Msport Join Date: Apr 2008 Location: Surrey iTrader: (0)	How does my sat nav traffic work??? So I have the cheaper nav, the smaller screen, business nav? My question is.... I know I don't have the real time traffic but I do have some kind of 'delayed...' Traffic updates, I was wondering how this works, is it by sat updates???? It seems to be quite dubious on accuracy, but helps sometimes!!
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10-09-2016, 12:15 PM	#2
Martin2C Second Lieutenant 44 Rep 226 Posts Drives: 2017 750i M Sport Join Date: Apr 2016 Location: Northamptonshire iTrader: (0)	It uses the RDS-TMC system, which is basically coded message sent via FM. I had it in my E60 (Professional Nav) and it's usually pretty out of date, only really of use when there's a major incident such as a closed motorway.
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10-09-2016, 12:27 PM	#3
changed Lieutenant 25 Rep 410 Posts Drives: F10 Msport Join Date: Apr 2008 Location: Surrey iTrader: (0)	So just like the traffic report button we get on the radio then?
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10-09-2016, 01:12 PM	#4
kinhwear Devon Old Geezer 7 Rep 149 Posts Drives: F11 530d Join Date: Oct 2015 Location: Devon iTrader: (0)	It is actually broadcast within the Classic FM signal and decoded by the car, you dont have to listen to Classic FM of course!!
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