RDS-TMC and GPRS Traffic differences with Navcore 7.48x

DennisN · Posted: Mon Apr 07, 2008 8:31 pm Post subject:

Nearly 400 miles today, GO920T, map Western & Central Europe v710.1576, App 7.481 (9086/080324).

I got indication of good RDS-TMC signal all the time after it first acquired. I got two icons on the sidebar, but when I looked, there were four incidents - first two were showing, lane closures, last two were not showing on the sidebar, congestion. No indications of estimated delays; I didn't get voice notification of delay, just "traffic situation has changed" and I wasn't asked if I'd like to replan.

So for my money, it's still useless!!
_________________
Dennis

If it tastes good - it's fattening.

Two of them are obesiting!!

AndyVaughan · Posted: Mon Apr 07, 2008 9:13 pm Post subject:

Dennis - we did warn you it was still useless.

Here are my screenshots from today - no delay info but the most I have ever seen on the sidebar with Navcore 7 and RDS-TMC.

I think that they are all the same type of incident has something to do with it.

The only other thing I can throw in to the mix is that I was using GRPS traffic yesterday, and this is the first switch on since then - these could be cached info from yesterday that haven't cleared? I don't know if the weather symbols for high wind and snow shown on the overview map are available via RDS-TMC?

Andy

AndyVaughan · Posted: Mon Apr 07, 2008 9:16 pm Post subject:

I have just looked at my post above and noticed that most of the traffic incidents are coloured green?

DOH!

That is the route I had planned!

Andy

Tobas · Regular Visitor Joined: Oct 06, 2004 Posts: 90

A week of using 7.481, about 900 miles, no delay times and when there have been 2 or more incidents on route, nothing at all on the traffic bar. Only when there is one incident does anything appear. TT got back to me promptly saying they are working on an update due very soon. Whether that fixes multiple display and/or delay time problems, don't know.

emjaiuk · Posted: Tue Apr 08, 2008 9:00 am Post subject:

DennisN · Posted: Tue Apr 08, 2008 2:59 pm Post subject:

emjaiuk · Posted: Tue Apr 08, 2008 3:24 pm Post subject:

DennisN · Posted: Tue Apr 08, 2008 3:35 pm Post subject:

emjaiuk · Posted: Tue Apr 08, 2008 4:12 pm Post subject:

dhn · Posted: Tue Apr 08, 2008 4:29 pm Post subject:

AndyVaughan · Posted: Tue Apr 08, 2008 10:37 pm Post subject:

DennisN · Posted: Sun Apr 13, 2008 4:27 pm Post subject:

Just a "useful" (??) titbit Andy. I went "up north" yesterday and GO920T App 7.481 told me of traffic on the M1 between J26 and J27 - at first merely lane closures (or narrow lanes), then later an accident, no delay information, of course. When we stopped at Tamworth services on the M42 I decided to play.

So I swapped the RDS-TMC to the GO720, App 7.221, which then gave me delay of 103 minutes. Without voice selected, it therefore adjusted my ETA by 103 minutes.

So I swapped it all back to the 920, which again only told me of an incident, no delay info.

In the meantime, the (now disconnected) 720 retained the delay info and continued to show a 103 minutes later ETA! I had switched off both devices between every set of swapping, so they were still retaining the route. When I re-navigated to my destination, the 720 (without RDS-TMC) reverted to original ETA.

You've done comparison tests with RDS-TMC and GPRS, so I wonder whether those might have been affected by the route retention feature?
_________________
Dennis

If it tastes good - it's fattening.

Two of them are obesiting!!

AndyVaughan · Posted: Sun Apr 13, 2008 6:43 pm Post subject:

I have often wondered about the delay retention.

I agree with you, if you recalculate your route it seems to clear the retained traffic info.

When I did the comparisons I did the RDS-TMC first, then the GPRS. I didn't clear routes in between, but the GPRS seems to have added delay info OK.

I still haven't seen any delay times at all using 7.48x with RDS-TMC, but have with GPRS.

The only problem with GPRS and 7.48x is the classifying of the incident by colour.

I am waiting for the next update as hopefully this will fix it - from the post Vicky made it looks likr the same problem exists in Navcore 8 as well, so TT have some incentive to fix it or they will be knowingly launching a faulty product - not a clever idea! - But it hasn't stopped them before as I made them aware of the 1 minute delay issue before the 920 launched.

Andy

DennisN · Posted: Sun Apr 13, 2008 7:34 pm Post subject:

As I've said before, the colour of the incident matters not one bit to me - the way I see it, if the GO correctly tells me there's a delay en route, I'm not bothered what's causing it, just tell me how long it'll delay me, tell me it's an accident, lane closure, contraflow, fog, flood, whatever and that's nice, but I don't need all of those to be different colours. Just the one colour it's giving right now (grey) will do quite well enough to show where it is and the word Accident, length of affected road and length of time delay will make me happy as a pig in the proverbial. I need to get past, through, over or around it, not identify which emergency service to send along to fix it for them! I don't get colours from Radio 5 and I seriously wonder if TT have dropped the colour scheme like they have reduced fine details on maps.

I too have never seen delay times with 7.48x. I do get them with 7.221 RDS-TMC, but they're not accurate (spelled USELESS). I've now been three weeks trying to get a bit of free GPRS out of TT and it's now in status "Research".

theripper · Posted: Sun Apr 13, 2008 8:43 pm Post subject:

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