More About GPS Map Updates
About ten days ago we wrote about why GPS maps are often incorrect and outdated. On Sunday the New York Times wrote an article about NAVTEQ and their process for mapping changes to their data.
Navteq updates its database continuously, releasing new versions several times a year so its customers are not selling maps that are long out of date. But as long as GPS units depend on digital maps stored onboard – the satellite’s signal provides information only to determine a position, not the street grid itself – they are always going to have some holes because road networks are constantly evolving.
They also briefly talked about the expensive costs sometimes associated with map updates, particular for in-dash GPS navigation systems.
For consumers, keeping a navigation system up to date requires purchasing a new digital map. Automakers typically issue annual updates for their systems; most recent models require a new map DVD at $200 and up. (One for a Cadillac Escalade or a Jeep Grand Cherokee is $199, while the latest Lexus update is about $350.)