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A detail map is a set of map data that can be loaded into a GPS navigation system.

Detail maps usually include a lot more information than a basemap. They commonly include streets of all sizes, rivers, lakes, parks, and even individual street addresses.

Some navigation systems come pre-loaded with detail maps for all of the United States and Canada. Others require that you load detail maps for particular areas using a personal computer.

The area covered by detailed maps may be limited by the amount of memory in your GPS navigation system.

This example screen from a Garmin StreetPilot shows detailed road data, including local streets and the individual ramps for a complex interchange.

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