1. VSL International Ltd. Bern Switzerland
2. Fatzer AG Romanshorn Switzerland
3. Bundesanstalt für Straßenwesen Bergisch Gladbach Germany
4. TNO, Delft, and Eindhoven University of Technology Eindhoven The Netherlands
5. Breinlinger Ingenieure Tuttlingen Germany
6. Prof. Sedlacek & Partner Aachen Germany