Here you will find two excellent road maps of Belgium: 1 : 800 000 (A3 format) en 1 : 1 200 000 (A4 format). On the maps you will find information about highways, main roads, secundary roads, cities, airports and railways. You must download the zip file first and unzip the file with a program like filzip. You can view the map (tiff) with your Windows Viewer.