If your GPS comes with maps, then they are most likely from sourced from one of two companies: Navteq or Tele Atlas. If you use Google Map or MapQuest or Yahoo Maps, their maps are provided by one of those two, as well. The copyright notice tells you which. In many cases, old maps work just fine, because roads don't change a whole lot. I still use a printed map of British Columbia from 1986, the last time a major highway was added to our road system. Primarily, it's new subdivisions that get added and downtown streets get one-wayed. But... Read more →
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