With navigation systems it is easy as never before to plan your journey. Just tell the device your destination and it will calculate the shortest or fastest route.
Navigation devices in cars are used for orientation and for finding ways to a specified destination. They are suitable for holiday as well as for business trips.
Navigation devices can be permanently installed in the car but there is also the option of using mobile devices. With the right software even a cell phone gets this functionality if it has an integrated GPS receiver.
Mobile devices have the advantage that they can be used outside of the car as well and it is more unlikely that they are stolen because you can take them with you all the time. Built-in devices are often cheaper and offer for example a larger display.
Navigation Systems have a lot of advantages compared to normal maps.
A navigation system makes the route planning for courier drivers much easier because old fashioned paper maps need quite a lot of space and to find the perfect route or even a specific place can be very challenging.
Sometimes on long distance trips even more than just one map is needed that also must not be too old as otherwise the roads and their names may not correspond with the actual ones.
As long as the correct maps are available (and these maps are up-2-date) along with a co-pilot who can interpret it accordingly maps can be quite effective. But especially if the driver is alone maps are problematic. He can't read them while driving without putting himself and others at risk. For orientation he would have to stop in between and that takes time.
You tell the navigation system your destination and it determines the shortest or fastest way to that point. The section of a road on which the driver currently drives is indicated on the display for better orientation and the he also gets acoustic instructions so that the driver can concentrate on the road and there is no need of permanetly focussing the display.
The "voice" of the navigation device is typically female but it's possible to choose other voices as well as long as these are installed on the device. Even comic voices known from TV are possible.
Of course, it is also easily possible to update the device's maps.
But it is not always free of charge and a PC-connection is normally needed to do such an update.
Modern devices have the great feature that they can communicate with each other. Every car on the highway with such a device will send warding messages to others in range.
You can buy navigation devices nearly everywhere. In a mobile phone shop, a shop for electronics or on the internet.