In 2008, the old section of Nationaltheatret Station was renovated. Upgrades included new lighting, a new public address system, new escalators, a more powerful fire safety system, improved emergency exits and replacement of cables. The upgrade made the old section lighter, as it was previously painted in dark red, and visually similar to the new section. Between 2008 and 2012, the Norwegian National Rail Administration is performing a major upgrade to the section between Lysaker and Etterstad, including the Oslo Tunnel. Among the upgrades are axle counters, mounting of an overhead conductor rail, new switches, switch heaters at the tunnel openings and new tracks.