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What exactly is included in Map Updates
Obviously i would assume that any new or old roads are included in whatever is considered the 'new' updated map. What other information is included in the update? Items such as hospitals, restaurants, fast food locations, police and fire locations, new/old retail stores and any other locations that a GPS user might want to locate while traveling?
Comments
The mapping companies get and update the POIs from a few different places. They get them from compiled databases of businesses other companies compile. An example is InfoUSA who mapping companies have purchased databases from. This is sometimes why these POIs don't make much sense as the addresses provided don't always match well.
Another factor, though no longer as much of an issue as it was years ago, is memory. POIs take up more memory on the device so GPS manufacturers might choose to put one million POIs on one device and twelve million on another.
Either way the annoyance of not being able to update them and not being able to switch them off without dropping custom POIs plagues me every day.
I have specific fuel accounts with only two oil companies and maintain my own fuel stop Custom POI database so I can plan fuel range. Even Oil company data has some mysterious lat long locations often including large volume farms and of course the independent servos change suppliers so it is hard to keep up to date, makes me wonder how they manage their accounting.