WATCH THE POST CODES

mow · Posted: Fri May 20, 2005 6:28 pm Post subject: WATCH THE POST CODES

What I didn't want to find out is that the post code function on the new Tom Tom upgrade was suspect. But now I can confirm it is.
Entered two post codes in Epsom and Tom Tom came up with the wrong street (checked with the Post Office website and yes Tom Tom is wrong)
Try KT174AA Hawthorne Place (Postoffice) Delaporta Close (Tom Tom)
Great !!!!!!

alix776 · Posted: Fri May 20, 2005 7:10 pm Post subject:

delporte close is off hawthorn place so its not really wrong it will still get you there to be honest it not that far out it just looks like the road indexed wrongly as i said it will still get you there
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currently using aponia truck navigation on windows phone. Good bye IOS don't let the door hit you on the way out .

Oh the joys of being a courier.
device Lumia 950 xl

mow · Posted: Fri May 20, 2005 9:21 pm Post subject:

Well it will get you there ish.
Here's another one:-
KT174RG is Stevens Close but to Tom Tom it is Upper High Street. Now OK Stevens Close is off Upper High Street but I thought the post cose was specific to roads not the general area ?

alix776 · Posted: Fri May 20, 2005 9:27 pm Post subject:

the post code may relate to more than one road
_________________
currently using aponia truck navigation on windows phone. Good bye IOS don't let the door hit you on the way out .

Oh the joys of being a courier.
device Lumia 950 xl

mow · Posted: Fri May 20, 2005 9:42 pm Post subject:

Alix
So are you saying that the address search is more accurate than the post code search ?

Wishlist · Lifetime Member Joined: Mar 10, 2005 Posts: 160

MikeB · Posted: Fri May 20, 2005 11:09 pm Post subject:

My understanding of the way postcodes work is that a single post code can cover an area from 1 building to something much larger in rural areas. There is no set size to the postcode area.

Now the magic word here is "area". But TomTom and other mapping applications work in points (locations) and lines (roads and other features).

If you have a postcode (point) you need to associate it with the nearest road (line) and this is where these discrepancies will slip in. Any postcode that is near a junction of two roads could go to either road depending on which is nearest.

It is the Ordnance Survey who determines the exact point for a postcode (hence the withdrawal of the Postcode POIs for copyright reasons). If the OS has not positioned the arbitary Postcode epicentre point near the right road then these errors will creep in.

As the others have said though. This will get you much closer than any other method. Interestingly I had only found 1 such error in nearly 4 months usage. I suppose that I have just been lucky.
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Mike Barrett

Wishlist · Lifetime Member Joined: Mar 10, 2005 Posts: 160

MikeB · Posted: Fri May 20, 2005 11:57 pm Post subject:

Wishlist · Lifetime Member Joined: Mar 10, 2005 Posts: 160

Ahh I see

Heavy stuff indeed.

Not visited the TT Navigator pages just the Go ones (there is more than enough here to keep my busy!!) Interesting reading though. Thanks for the links Wink

rayflan · Frequent Visitor Joined: Apr 06, 2005 Posts: 277

First day I tried the new maps I thought what a waste of time 6 out of 8 post codes were wrong well a street or so out.
Having used them all week about 30 trips Im a happy bunny, about 90% to the door navigation.
Have even found some of my customer records on file are wrong after entering the postcodes into the go.
Residential postcodes seem to be the most accurate.I use my go all the time 25 plus journeys a week so time will tell.
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Ray
New Url www.tomtomsatnav.info
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mow · Posted: Sat May 21, 2005 7:48 am Post subject:

So let me get this right, If I use "navagate to" and select the post code and number I could end up in a near by street not the one I want, but if I use the "navagate to" address i.e. city, road, number it is spot on ?
I that is the case I must be missing the point on post codes apart from a general area search utility.

rayflan · Frequent Visitor Joined: Apr 06, 2005 Posts: 277

When you navigate to postcode ttgo shows the street/road you can check with show route.
I've found it very usefull on roads with no numbers ie Mr Smith, The Cottage, Holly lane....no more driving up down country roads looking for house names...I hope.
The place I had trouble was Cheslyn Hay, Staffs.As a service engineer I use my go alot and since getting it has never got me lost.As long as I get there without stopping asking people or buying local maps It does the job for me and with alot less stress.
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Ray
New Url www.tomtomsatnav.info
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