Global positioning system units – such as the Garmin unit you keep in your car – can make driving to unknown locations as simple as cruising your own neighborhood. The unit determines your exact position using GPS satellites and compares your location to its stored maps to determine points of interests around you – whether roads, restaurants or rivers. With accurate maps, the unit will provide concise instructions to reach your destination, but if its maps are out of date, it could send you the wrong way down a one-way street, use inefficient routes or call for a turn where none exists. Garmin gives you the chance to download a free map update with the purchase of a new unit to ensure accurate instructions and proper performance of your new device. Tips Warnings Writer Bio
