The core activity of the company "Ingenieurbüro Bieli" is the provision of services in the field of transportation technology and transportation planning. This includes in particular: planning and implementation of intelligent transportation technology, such as traffic signal systems; creation of functional road space designs, intermodal transportation concepts, and traffic-related expert opinions for road or construction projects; and consulting public and private institutions on transportation-related issues during the planning and implementation of construction projects. The company thus offers engineering services for the planning and implementation of transportation infrastructure and systems.