Automotive GPS

The Global Positioning System, or GPS, is a cutting-edge technology available for your vehicle. Automotive GPS uses satellite positioning to track your car's location and help you map the distance and directions to your destination. Some provide handheld PC- or PDA-based text information, while others feature color screens with maps that are integrated into your car dash or console. For PC- or PDA-based models, upgrades can be downloaded regularly to keep you abreast of road conditions, construction and detours. In addition, computer-generated vocal instructions can be broadcast though external PDA or PC speakers. Automotive GPS navigation systems typically stand alone and don't require a PC or PDA. Today, many high-end vehicles come with GPS already installed, and it can be added to most cars aftermarket as well.Automotive GPS systems also include voice response-only systems. These don't provide visual maps or directions. Instead, they offer a push button for immediate connection with a live person who will guide you to your destination. When shopping for a GPS system, it's important to ensure the system's accuracy. The system should be correct to within 5 meters or less--keeping in mind that this number may increase due to unavoidable factors like extreme weather, satellite repositioning, and even loud noise interference. Also, the system should be able to be regularly updated for changes in street names, detours or construction. Lastly, the directions for frequent trips or at least your typical point of origin (i.e. home, work, or school) should be retained or programmable.