From the FGSV website: 

Traditionally, the Research Society for Roads and Transport invites interested experts to Karlsruhe every two years for the road operation colloquium with accompanying exhibition, but the event had to be canceled in 2021 due to the pandemic. The colloquium deals with the latest developments in the field of road maintenance and winter road maintenance from different perspectives. The first day is dedicated to road operations and the second to winter service.

In addition, the exhibitors will present the “state of the art and developments in road operations” in short presentations during a separate program section in the exhibition.