Many Bad Locations

[dastagg]

I've noticed many POIs in my TT being in wrong places. I even compared some GPS Coordinates in Google Maps and they don't match up with my TT. The street maps seem fine, but a huge amount of POI's need correcting. Where are they getting these POIs from and so many are incorrect. I make the corrections on ones I know, but these should be fairly accurate as this is what we should be using to get to a destination wanted. Seems like they have put a lot of POIs on their maps and just threw them in and not checked them out first.

 

[SShadow]

I believe that due to the inaccuracies of the actual addressing in the map (ie where on the road an address falls) most of these POIs were entered into the database according to address and not Lon/Lats. I've seen some POIs blocks and blocks off... So I just go in and edit them to move them to a more "reliable" point of reference on the map.
Not much we can do, at least until someone figures out a way to make the addresses location on the map more accurate. (IE my home address is actually down the street and around a corner from where it actually is... I reported it to TeleAtlas and TomTom - just in case they're not too busy to change where the address falls on my street.)

 

[F22]

I wonder if maybe the POI were developed/defined under on of the other formats that were used to define which maps are used. I don't recall what those settings are but on my hiking Garmin I can select something like NA84 or NA76 or some such. Those two values can throw stuff off if you select the wrong one. Maybe the poi files are created under the older system????

 

[ajsasr]

According to TT CS, TeleAtlas doesn't do sight surveys and that's why their addresses are wrong. They look for one address, and then go soo many feet down the road and make that the next address. That's why their residential are so wrong. Of course take all this with a grain of salt since it comes from a CSR.

 

[dastagg]

Whats also funny is I looked at several POIs on Google maps and they are worse than TT on locations. Several are grossely bad locations by several miles.

 

[infama]

According to TT CS, TeleAtlas doesn't do sight surveys and that's why their addresses are wrong. They look for one address, and then go soo many feet down the road and make that the next address. That's why their residential are so wrong. Of course take all this with a grain of salt since it comes from a CSR.

Navteq does the same. Its called interpolation.

Not all addys are done like this but a lot are.

If the road is 100m long and there are 10 houses and they know the last number is say 200 (even numbers), then every 10 meters, they approximate another house and increase the numbers accordingly.

 

[bobaloolie]

I've used both Navteq and TeleAtlas. The TomTom's POI's are dreadful at times---and not just the addresses. The phone numbers are often years out of date.

The POI database seems very old compared to Garmin's and Magellan's. All we can do is let TomTom know that we're not impressed, and hopefully they'll put as much money into the actual software as they do their flashy packaging.