[7] During 2008, Banedanmark announced plans for the conversion of signalling across the entire Danish railway network to European Train Control System (ETCS) Level 2.

[15] However, during the late 2010s, the ETCS programme reportedly ran into issues with the retrofitting of existing rolling stock to use the new signalling system; the IC3 fleet of long distance diesel multiple units proved to be a particular source of problems, thus the end date of the rollout was postponed considerably.

[16] These difficulties were in part compounded by the sweeping scale of the programme; no other nation had attempted such a conversion before and was regarded as one of the largest resignalling schemes in the world.

[18] Another major undertaking involving the agency was the Fehmarn Belt fixed link, a immersed tunnel between the Danish island of Lolland with the German island of Fehmarn; it is one part of the wider Priority Project 20 of the Trans-European Transport Network (TEN-T), which shall construct a high-speed rail line between Copenhagen and Hamburg.

During September 2022, Banedanmark announced the installation of CBTC equipment across the S-Bane had been completed, although some work remained to fully commission all of its capabilities.