Today, we cannot imagine route planning along known and unknown roads, without the use of navigation devices, which have become almost mandatory car equipment. They are available as individual navigation devices, integrated into a car; but lately, navigation programs on modern mobile phones with built-in GPS receivers are becoming widely used. In this way, road navigation represents one of the most common uses of global navigation satellite systems.
Offers of navigation devices and programs on the markets are very wide. In this diploma thesis, we were dealing with two individual navigation devices and two programs loaded on the navigation device and a mobile phone, respectfully. We analyzed and described individual devices and described them. Then we tested their functioning on a test drive and tried to determine whether there are any differences between the individual devices and programs. We have also analyzed the responses of the individual devices and programs; display of the route and information during the drive and monitored the delivery of the drive instructions. It might happen while driving, that we accidentally choose the wrong exit; our route many times leads us through the tunnels. This is why we studied the responses to wrongly selected roads and what happens when we lose the signal. We discovered significant differences between individual navigation devices and programs.