Stupid and Dangerous route plans on 540 compared to a TT One

Ray-of-Sunshine · Regular Visitor Joined: Jul 21, 2007 Posts: 73

I have been running my Dads TT 540 LIVE alongside my TT One v2. I must start by saying they are both using the latest map and the problem also existing on the last map too.

I have to say I trust and agree with the route choices on my TT One far more than the stupid and dangerous routes the 540 comes up with and I have the stupid IQ routes turned off as that just makes things worse.

I am hoping that others with a 40 series can confirm which route theirs comes up with as a comparison to see if its just my Dads 540 or all 40 series TomToms that comes up with dangerous routes.

Here is a shortened route example for others to test.

Plan a route from A to B using longtitude and latitude

Depart from N56.64422 W2.92511

Destination N56.66721 W2.91088

It doesn't matter whether you use fastest route or limited speed to like 50mph (as I do when I tow a trailer or caravan) now my Dads 540 it takes you up the A90 and then you do a U-turn on a busy dual carriageway if you could look closely and let me know what result you come up with and what unit you are using that would be great. Now my TomTom One and the TT online route planner takes a far more safer, sensible and quicker route taking the next turn off to the left for the A926 Forfar/Kirriemuir turn off and turns towards Forfar over the flyover and then you turn left back up the B9128 before turning left onto the local road which takes you over the another flyover to the destination.

For those of you who have access to TomTom Online route planner here is the link showing the route my TomTom One takes

http://routes.tomtom.com/route/A90%2C%20Padanaram%2C%20GBR%4056.64703%2C-2.92386/Unnamed%20road%2C%20Forfar%2C%20GBR%4056.66708%2C-2.91046/?leave=now_with_traffic&center=56.66707935082626%2C-2.910378402241554&zoom=11

And this is the route the 540 comes up with I had to cheat here and start past the turn off to show you the stupid route but on the 540 itself it chosses this route from the same starting point as my TT One

http://routes.tomtom.com/route/A90%2C%20Padanaram%2C%20GBR%4056.65347%2C-2.92008/Unnamed%20road%2C%20Forfar%2C%20GBR%4056.66708%2C-2.91046/?leave=now_with_traffic&center=56.66865342370584%2C-2.9075030741771845&zoom=12

I had a printout of these routes saved as a pdf file I wanted to attach but I couldn't figure out how and if I can attach files to this message.

I look forward to finding out if its just my Dads 540 that is wonky or if TomTom installed inferior route planning software when they dreamed up IQ routes.

matthewj · Frequent Visitor Joined: Apr 03, 2006 Posts: 751

Google maps comes up with the same "dangerous" route. But if it is legal, then it is a fair route for the satnav to come up with surely? No reason you have to take it when you get there though - just drive on. I've done so several times. You are in charge, not the satnav. It will just find you another way.

Ray-of-Sunshine · Regular Visitor Joined: Jul 21, 2007 Posts: 73

eyeQue · Lifetime Member Joined: Aug 27, 2008 Posts: 235

As a caravanner [all over Europe] I tried your route on Mapsource.

My result with Garmin.

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Border_Collie · Posted: Wed Mar 04, 2009 3:12 pm Post subject:

Autoroute 2007 gives the same route as eyeQue.

iGO8 software also shows the same route when using Shortest (3.5 miles)

However, Fastest, Economical and Easy all route via a U--Turn further up the A90. The strange thing is, these all show 3.4 miles, which is shorter than shown in Shortest Route.
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Ray-of-Sunshine · Regular Visitor Joined: Jul 21, 2007 Posts: 73

Thanks you eyeQue that exactly the route that my trusty TT One shows The 540 took you further up the A90 before getting you to do a u-turn on the dual carriageway to come back down the A90 and then turned of onto the B9128 and then turning right onto the local road to the destination.

eyeQue · Lifetime Member Joined: Aug 27, 2008 Posts: 235

My Mapsource route was based on 'Truck' [for all my caravan routes] and the same in my main autorouting unit - iQue 3600.

There is a great difference in the routes created with the option 'truck' compared with 'car'.

The Oregon does not have the 'truck' option but as the route is planned on the PC and transferred to the unit it does meet my requirements for the caravan.
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Ray-of-Sunshine · Regular Visitor Joined: Jul 21, 2007 Posts: 73

Darren · Posted: Wed Mar 04, 2009 4:05 pm Post subject:

What map versions are the two devices using, ONE & 540?
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Ray-of-Sunshine · Regular Visitor Joined: Jul 21, 2007 Posts: 73

MrT · Posted: Wed Mar 04, 2009 6:03 pm Post subject:

alix776 · Posted: Wed Mar 04, 2009 8:39 pm Post subject:

if you felt what the 540 was asking you to do was either dangerous or illegal then you would follow the units instuctions the routeing differences could be either unit or appliacation differences
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layingback · Regular Visitor Joined: Feb 12, 2009 Posts: 124

MrT · Posted: Thu Mar 05, 2009 8:07 am Post subject:

How about applying common sense to the suggested information supplied by the TT unit? It is not any form of auto-pilot.
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layingback · Regular Visitor Joined: Feb 12, 2009 Posts: 124

You'll not get common sense out of a piece of silicon, at least not in our lifetimes ;-)
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