There are many GPS systems in the world. Sri Lanka like developing countries still they do not have functioning properly. But most popular and fast growing GPS system is automobile Navigation system. It is most common and have lot of advantages. When choosing a good navigation system also consider these features.
Features
All GPS navigators on the market today include pre-loaded maps and provide spoken directions and automatic rerouting if you miss a turn. The following are additional features they have.
Screen size
- screens ranging from 2.5 to 5 inches.
- 4.3-inch wide screens are quickly becoming the standard.
Spoken street names
- Better systems tell you to turn onto a street, highway, or route number by its name rather than the more general
Real-time traffic reports
- The real-time data is available to subscribers through a cell-phone network, FM signal, or satellite radio service. But the service is currently available only in some cities.
- The latest trend is free traffic information. Navigon offers free FM traffic service with some units
Predictive data entry and dynamic search
These GPS features make entering a city name or address faster. With predictive data entry, as you type, the screen's keyboard will highlight only letters that help complete a known name.
Detour feature
- A manual "detour" button will find you an alternative route. Some models allow the user to select a specific distance to route around a problem. Traffic-capable devices integrate their traffic information with detouring functions, prompting a user to chose an alternative route when traffic conditions are unfavorable.
Routing option
- Some systems can alert to toll roads on your chosen route and often allow you to opt for a route that avoids them. Other routing options you might want to look for include multiple trips, or routes for biking or walking that avoid highways and let walkers go against one-way traffic.
Mounts and mounting
Most portable systems mount to the windshield using a large suction cup.
Power Supply
- An AC power adapter is sometimes included with the systems, allowing the device to be used and recharged indoors. Some can also be charged using a USB cord.
Bluetooth compatibility
- Can display user's telephone book, and shows caller ID on-screen. A nice tie-in, this feature allows for dialing point-of-interest locations found in the GPS device. Requires a Bluetooth-compatible telephone.
MP3 player
- With a music player, the device can store and play pre-loaded audio files, either through its speaker or through the car stereo using an FM transmitter or a cord from the GPS headphone jack to the car's auxiliary port.
- Most navigation units have SD card expansion slots for file storage.
Video player
- Shows videos previously downloaded to unit's hard drive or stored on an SD card. Using this GPS feature normally disables navigation while the video is being shown.
Photo viewer
- The viewer allows users to display previously loaded photos or photos stored on an SD card, as a single image or as slide shows.
Foreign languages
- Many units offer spoken and displayed directions in Spanish and French in addition to English, and several have even more choices.
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