Strange routing...me or my TomTom

darrenintheeast · Regular Visitor Joined: Sep 18, 2008 Posts: 78

all

Either my daugther ( 4 ) has been pressing buttons on my TomTom or there is sommat wrong with map or i dunno what...

However/

On the london A12 at junction 18 i wish to exit the road and turn right onto the A414...However my TomTom wants me to turn left at the roundabout and then do a U turn and then drive back along the A414 crossing over the A12 and onto my destination...

Curious as the first roundabout is just that...and i can turn right there...so i am confused as to why it would want me to turn left and then do a U turn.

So is there an option i can check...

I did remove all the mapshare updates and it is still the same....

Hope
Hope

mpwilson99 · Posted: Tue Aug 25, 2009 5:53 pm Post subject:

It seems to be ok for me, can you just confirm you mean the junction here.. N51.720, E0.528

Ive tried it going Eastbound turning right going to Danbury, and West(London)bound turning right towards Great Baddow.

What map version / navcore you using?

MPW
_________________
TomTom 700 GO user since Dec 2005.
TomTom PDA XDA user since Dec 2007.
TomTom HTC HD2 user since Jul 2012.

darrenintheeast · Regular Visitor Joined: Sep 18, 2008 Posts: 78

Anita · Posted: Tue Aug 25, 2009 6:12 pm Post subject:

You can stop beating your daughter up (unless she sneaked into my house while I wasn't looking) because my 720 does the same, unless I select Shortest Route! Is it a very congested roundabout, where turning right could take longer than the U-turn option?
_________________
Anita
TomTom VIA 135 - App 12.075
UK map 1130.12368
Samsung Galaxy S21

darrenintheeast · Regular Visitor Joined: Sep 18, 2008 Posts: 78

darrenintheeast · Regular Visitor Joined: Sep 18, 2008 Posts: 78

if i change the routing from FASTEST to SHORTEST...it takes me a different route....DAMM

i hate these things

Anita · Posted: Tue Aug 25, 2009 6:18 pm Post subject:

Maybe it's just the way the algorithm used to calculate Fastest Route works, but Shortest Route gives a right turn at the roundabout.
_________________
Anita
TomTom VIA 135 - App 12.075
UK map 1130.12368
Samsung Galaxy S21

Anita · Posted: Tue Aug 25, 2009 6:21 pm Post subject:

darrenintheeast · Regular Visitor Joined: Sep 18, 2008 Posts: 78

strange very strange..

Cant see how turning left then going about 100 yards and doing a U turn and then back 100 yards can be faster than simply doing a right turn at said roundabout....

good job i dont follow its instructions to the letter

darrenintheeast · Regular Visitor Joined: Sep 18, 2008 Posts: 78

philip_de · Occasional Visitor Joined: Aug 22, 2009 Posts: 12

Hi

You can check if it is IQRoutes by turning it off and recalculating the route, if you go to Change Preferences then move through until you see Planning Preferences, click that then select the IQ Routes button bottom left and disabled.

Let us know if it was that.

Best Regards

Phil

darrenintheeast · Regular Visitor Joined: Sep 18, 2008 Posts: 78

i have a TomTom One Xl

No live or IQ routes on this model

Daggers · Posted: Tue Aug 25, 2009 8:10 pm Post subject:

It doesn't need to be related to IQ routes - It's more likely to be an error in the map itself. Each section of road has a time to drive associated with it. If this time is incorrect, then the routing algorithm will find what it thinks is a quicker route.

Using Shortest Route to calculate won't take the road times into consideration.
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Garmin DriveSmart 50 LMT-D

mpwilson99 · Posted: Tue Aug 25, 2009 9:32 pm Post subject:

darrenintheeast · Regular Visitor Joined: Sep 18, 2008 Posts: 78

trust me to find a flaw.... Laughing Out Loud

My mate has a 910 ( and hes never updated the maps ) and it doesnt do it on his....

Perhaps a fix due soon.....

I didn't know to fix it with a mapshare

darren

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