Together with Ministry of Transport of Slovak Republic, AIL researchers will test the sensory readability of horizontal and vertical traffic signs on selected sections of roads in the territory of the Slovak capital, highways, roads I., II. and III. classes. The measurements will be taken repeatedly on the agreed road sections to cover different light and weather conditions. All measured data will be assigned a location marker from satellite navigation with information on the accuracy of the measurement, information on the speed at which the measuring vehicle passed the marker, and the signal strength of the data line of the selected 4G or 5G access technology (depending on availability).