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Definition: navigation system


An electronic system in a vehicle or mobile device that provides a real-time map of the current location and step-by-step directions to a requested destination. Often called a "GPS," a navigation system (nav) receives signals from the satellite-based global positioning system (see GPS). See reality view, Google Maps, Waze, CarPlay, Android Auto, in-dash navigation and portable GPS.




A Very Useful Cross-Street Feature
When not in directions mode, the latest Garmin nav displays the next cross-street ahead. When you have only street names for directions and not the house or building number, this feature is invaluable. For automatic directions, a nav must have the numeric street address, in which case the next turn is displayed here rather than the cross-streets.