Many drivers still swear by a dedicated portable GPS navigation system, and for good reason. A portable GPS, or portable navigation device (PND), leaves your phone free for other uses. Portable GPS ...

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GPS is an acronym for Global Positioning System. It is a satellite navigation system providing distance, time, and position measurements in the world coordinate system. To put it simply, it is a ...

It's pretty well established that car speedometers are mildly inaccurate. However, if you're wondering whether GPS is any ...