Getting lost is harder now that drivers can count on portable GPS devices to give them directions to new or unfamiliar destinations. Prices on these global positioning system devices have dropped and are much more affordable to the average driver yet there are more and better features on these newer GPS receivers.

Here are some of the main features and functions available on portable vehicle GPS navigators.

Unlike the more expensive factory installed versions found in some vehicles, a portable GPS device can be removed from one vehicle and used in another. Power comes from an internal battery or the 12 volt outlet in a vehicle's interior.

Addresses or names of locations are entered on a touch screen which displays 3D maps that change as the vehicle heads toward its destination. Depending on the brand or model, maps for the United States, Canada and Europe are available. Satellites keep track of where the vehicle is at all times.

Some portable GPS devices give spoken turn-by-turn directions. Drivers can set the spoken directions to include street or road names. They can also chose between either hearing a male or female voice. A few brands or models can also translate to different languages.

When a route is selected by the GPS but the driver misses the turn or exit, the GPS will return directions to get the driver back on course. In urban areas, some GPS receivers will provide alternative routes if there is traffic congestion up ahead. The driver still has the choice of ignoring the suggestion and continuing on the same original route. Other GPS devices can show routes that avoid toll booths.

Portable GPS devices that are Bluetooth compatible can allow hands-free operation if the driver supplies a Bluetooth enabled cell phone. Drivers can give a voice command to the GPS for it to find a point of interest such as a restaurant and call to make a reservation.

Although a portable GPS receiver can do many things a traditional paper map can never do, it will not replace driver experience or common sense. GPS devices usually give accurate routes, but in a small handful of situations such as on hilly terrain, turn directions are sometimes questionable.

If you don't drive often to new places, then a portable GPS may not be necessary for you. However, if you like the security and convenience of arriving to a new and unfamiliar destination without getting lost or wasting time, then a portable vehicle GPS device will become an indispensable automotive accessory you won't want to drive away from home without.

Copyright © 2009 Jon Chan

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