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Definition: navigation system

A GPS-based electronic system in a vehicle or mobile device that provides a real-time map of the current location as well as step-by-step directions to a requested destination. A navigation system ("nav") receives signals from the global satellite system, which is why most people call it a "GPS." For more details, see GPS, Google Maps, Waze, CarPlay, Android Auto, in-dash navigation and portable GPS. See reality view and vehicle tracking.