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Pocket GPS World :: View topic - RDS V GPRS Traffic
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RDS V GPRS Traffic

 
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Paul80
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Joined: Aug 25, 2005
Posts: 246

PostPosted: Tue Jun 17, 2008 3:28 pm    Post subject: RDS V GPRS Traffic Reply with quote

Hi Guys

Just a Go730T as a replacement for a faulty 520 (20) from Tesco Laughing

Anyhow as I had a GPRS subscription with the 520, as the RDS was next to useless I thought I would give both a go on the 730 with the new RDS Dongle.

First thing I noticed was how quick the RSD got a lock, it used to take ages with the 520, some times I could drive about for 2 hours and never get a lock.

Then did some routs to various places that I know have traffic issues all the time, thinks like Gatwick Airport etc.

The interesting thing was that using the GPRS service it showed delays on most of the routs, but using the RDS is showed no delays on any of them.

I thought RDS and GPRS used the same data.

Why such a difference in displayed data.

Paul
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mikealder
Pocket GPS Moderator
Pocket GPS Moderator


Joined: Jan 14, 2005
Posts: 19638
Location: Blackpool , Lancs

PostPosted: Tue Jun 17, 2008 3:34 pm    Post subject: Reply with quote

Paul, The RDS data will supply the information that is used to work out the delay information, not all restrictions have an associated delay though. The Navcore 8 software your device is running displays delay information whereas the Navcore 7 didn't work correctly in the UK.

Try tapping the TMC side bar to bring up the traffic menu and go to "Browse Map", zoom out and you will see red spots which are the delays, tap one of these and any associated information will be displayed, use the next arrow to scroll through the incidents, any with Yellow, Orange or Red colours to this will have a delay.

The only difference between the GPRS and RDS based service is RDS data is supplied regionally, and GPRS is full country coverage - Mike
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Paul80
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Joined: Aug 25, 2005
Posts: 246

PostPosted: Wed Jun 18, 2008 6:00 pm    Post subject: Reply with quote

Thanks for the reply mike

Just found it odd that for the same local journeys the two systems should give such vastly different information

tt730 with GPRS traffic showing delays

tt730 with RDS Traffic showing no delays for the same routes

All routes tested were under 50 miles

Paul
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AndyVaughan
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Joined: Apr 13, 2006
Posts: 1500
Location: Rossendale

PostPosted: Wed Jun 18, 2008 7:11 pm    Post subject: Reply with quote

What Navcore version are you running - the version that initially shipped with the x30s had the same RDS-TMC delay bug as Navcore 7 still has. Do a full back up using Windows Explorer and then update the device via TT Home. Navcore 8.010 seems to have fixed this issue (I think that is the version number for the x30s - Mike can correct me if I am wrong).
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Paul80
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Joined: Aug 25, 2005
Posts: 246

PostPosted: Wed Jun 18, 2008 8:24 pm    Post subject: Reply with quote

Running Navcore 8.010
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AndyVaughan
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Joined: Apr 13, 2006
Posts: 1500
Location: Rossendale

PostPosted: Wed Jun 18, 2008 9:58 pm    Post subject: Reply with quote

You should get delay info then. I have had problems with cached traffic info when switching between GPRS and RDS-TMC.

Try it again with the RDS-TMC plugged in on power up and see if you get delay info. Make sure you have a route planned.
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Elastic
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Joined: May 11, 2008
Posts: 49

PostPosted: Thu Jun 19, 2008 10:29 am    Post subject: Reply with quote

Paul80 wrote:
Thanks for the reply mike

Just found it odd that for the same local journeys the two systems should give such vastly different information

tt730 with GPRS traffic showing delays

tt730 with RDS Traffic showing no delays for the same routes

All routes tested were under 50 miles

Paul


I suppose the question has to be asked....

Which of the two was showing the correct delay?

Confused
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