The main customers of Heusch/Boesefeldt in Germany are the public administrations as the largest investors in the transport sector: Cities and municipalities, federal and state ministries as well as the road construction administrations of the federal states and their subordinate departments. Further clients are public authorities as well as private road operators in other European countries, industrial and service companies from the private sector in Germany and abroad as well as international organizations and commissions of the European Union (EU).