The scope of the project included renewal of the signalling and communications technique at Giessen main station and construction of a new electronic interlocking system.
The signalling of the Gießen station was controlled by the old interlocking type E 43, built during 1912-1958. The old mechanical system was replaced with an electronic interlocking system operated from a central railway control centre.
Pöyry provided the following services: cost-benefit analysis, general planning for detailed design and planning approval process for the control, command and signalling systems, including the adaptions of the old technology, track work, underground cable works, building facility, 50 Hz facilities, telecommunication systems and overhead contact line. Additionally, Pöyry was responsible for the whole environmental procedure like the environmental impact study and landscape planning.