Invensys Rail starts Gjonnes station signalling system on Oslo metro October 22, 2012 | Europe Company News Invensys Rail, along with Norwegian infrastructure owner Kollektivtransportproduksjon (KTPAS), has launched a new signalling system at the recently reopened Gjønnes station on the Kolsås ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password