However there are two types of car navigation systems available in the market such as a navigation system that can be installed in your car; and the second is the portable navigation system. It will be wise to understand how the car navigation system works before buying either it is important for you.

The car navigation system has blended with two components like a GPS data receiver and a CPU/display unit. The data will receive by the receiver through the GPS satellites and send it to the CPU/display unit. The triangulation method is employed in this system to trace the exact location of the car. The navigation system comes loaded with maps of your area that you can use to chart your route. Even there are some cheap systems that do not have maps. This is why you need to buy the maps of the locality and load them on your system.

Even the navigation system can not only direct a route, but also revise the route if you miss a turning. This system also provides to check your car speed; even it also displays the distance to travel before hitting the next turning, except these the duration of time will be displayed on reaching the destination also.

The most benefit of this system is that you can install your own maps on to this system. You can also be able to store on removable memory cards like SD cards, CDs or DVDs. You can pick and chose the maps that you need to carry instead of installing the system with hundreds of maps which is the bigger advantage to it.

You can also enjoy the view of the conventional flat map or the latest 3D panoramic bird’s eye-view which can be displayed on this system. You can enjoy your own Points of Interest (POI’s) and that can add to your system. For example most units incorporate include display of restaurants, airports and accident-prone areas etc.

A system that has the capacity to find out multiple ways to get to your destination should be one of your choices. There are some that gives you arrows that show you when you need to turn during your drive. Another important specification that you should consider when choosing a GPS navigation system is that it should also be capable of updating its data and information.

The first thing you need to do is to enter the ‘starting point’ by noting the present location. After that you need to enter the end destination, and let the navigation system suggest routes. This may include route choices like fastest route, shortest route, scenic route, etc. You also have the option to feed the route that you like. The navigation system will then follow that route.