Autosnelwegen.net - - Route numbering details for Belgium, Netherlands and Luxembourg (the Benelux region). In Dutch and English.
The Autostrada del Sole - - Unofficial page for this feature in Italy. Includes brief history and photos.
Autostrade - - Italian toll roads. Includes toll information, traffic conditions, and news.
Brian's Guide to Getting Around Germany - - Written specifically for an American audience. Includes information on the Autobahnen and traffic control devices.
Czech Motorways - - Contains maps, photographs, and system history.
DPower - - Italian vendor of safety products including some traffic control devices.
Driving Tips - - Includes motoring rules and regulations in various European countries and links to information on motorway and tunnel tolls.
Øresundsbron - - The Øresund Link is a bridge tunnel connecting Sweden to Denmark, which was opened in 2000. History of the bridge, prices, and information about the consortium which owns and maintains it.
ViaMichelin - - An online route planning service for Western Europe that provides the driver with interactive maps, driving directions and information on services featured near a user's travel route or address.