The European route E18 runs through the southern part of the borough. At Vækerø, the Norwegian national road 160 branches off and heads north-east, passing Furulund station, the Old Bjørnsletta station and Lysakerelven station before crossing the Oslo-Bærum border at Jar. The Ring 3 starts at Lysaker, crosses the Oslo-Bærum border in the southern Granfoss Tunnel, emerges at Mustad before entering the northern Granfoss Tunnel, finally emerging near Ullern Church. It passes the Radium Hospital before continuing into Vestre Aker at Smestad.