Invensys Rail will design, supply, install, and commission signalling on the extension of the Kolsås Line to Avløs, together with the Løren Line, a new underground link between the Ring Line (Line 6) and the Gorud Line (Line 5), which will allow trains to run directly between Sinsen and Hasle stations.

The Løren Line will be completed in December 2015, and the signalling project will be delivered in five phases, covering installation of new signalling as well as modifications to the existing infrastructure and the control centre at Tøyen, which uses Invensys Rail's Westcad train supervision technology. The extension to Avløs will be completed at the end of 2013.

Invensys Rail's Westrace computer-based interlocking will be used on both projects.